Update date: Aug 03, 2026 | 294 Pages | Report ID: M-AM-011027
Carbon Fiber Reinforced Filament Market
DMA IntelligenceCarbon Fiber Reinforced Filament Value Chain Analysis & Forecast Outlook 2033
Segments: Product Type (Continuous Carbon Fiber Filament, Short Carbon Fiber Filament, Long Carbon Fiber Filament), Application (Aerospace & Defense, Automotive, Consumer Goods, Industrial, Sports & Leisure, Others), End-Use Industry (Aerospace, Automotive, Electronics, Construction, Others), Distribution Channel (Online, Offline), By Region, And Segment Forecasts
$498.0M
Market Size, 2025
$541.3M
Market Estimate, 2026
$970.7M
Market Forecast, 2033
8.7%
CAGR, 2026–2033
Carbon Fiber Reinforced Filament Market Size, Share & Key Insights
The Carbon Fiber Reinforced Filament Market size was valued at USD 498.00 in 2025, and the market is projected to grow from USD 541.33 in 2026 to USD 970.66 by 2033, growing at a CAGR of 8.7%% during the forecast period 2026–2033. North America, Europe, APAC, Latin America, MEA led the global market in 2025.
Study Overview
 Study Period | 2021 - 2033 |
 Base Year | 2025 |
 Estimated Year | 2026 |
 Forecast Period | 2026-2033 |
 Historical Range | 2021-2025 |
| Units | USD Million |
 Coverage | Global | North America, Europe, Asia-Pacific, Latin America, Middle East & Africa |
 Deliverables | PDF + Excel Data Pack |
Major Market Players
Key Takeaways: Carbon Fiber Reinforced Filament Market
- In 2025, the global Carbon Fiber Reinforced Filament market size was estimated to be USD 498 Million
- Projected to grow at a 8.7% CAGR, reaching a valuation of USD 978 Million by 2033
- The Continuous Carbon Fiber Reinforced Filament category accounted for the highest market share of 62.6% within the Product Type segment
- Chopped Carbon Fiber Reinforced Filament captured a substantial 37.4% of the total revenue in 2025
- Regionally, North America emerged as the top market, generating USD 170 Million and securing a 34.1% share
- Primary market growth drivers include increasing demand from aerospace and automotive industries, advancements in 3D printing technology, and the growing need for lightweight and high-performance materials
- Key industry player Toray Industries strengthened its market position via strategic partnerships and continuous product innovation in high-performance composite materials
Market Definiton and Strategic Context
The Carbon Fiber Reinforced Filament Market refers to the industry segment focused on the production, distribution, and application of thermoplastic filaments infused with chopped or continuous carbon fibers. These advanced materials are specifically designed for 3D printing (Additive Manufacturing) processes, offering superior mechanical properties such as high strength-to-weight ratio, stiffness, and dimensional stability compared to traditional plastic filaments. The market is driven by increasing demand for lightweight, high-performance components across various industries, including aerospace, automotive, medical, and consumer goods. The integration of carbon fibers significantly enhances the material's structural integrity, making it suitable for functional prototypes, tooling, and end-use parts that require robust characteristics. This report provides a comprehensive analysis of the Carbon Fiber Reinforced Filament market size, detailing historical trends from 2021 to 2025 and offering a robust growth outlook and market forecast through 2033. The industry expansion is fueled by continuous innovation in material science, advancements in 3D printing technologies, and a growing emphasis on sustainable manufacturing practices. In 2025, the global Carbon Fiber Reinforced Filament market was valued at USD 498 Million, reflecting its critical role in enabling the fabrication of lighter, stronger, and more durable products. The market's trajectory is also influenced by the increasing adoption of industrial-grade 3D printers and the expanding application scope of additive manufacturing in critical sectors. Understanding the nuances of this market is crucial for stakeholders aiming to capitalize on the evolving landscape of advanced materials and manufacturing.
| Report Attribute | Details |
|---|---|
| Market size value in 2025 | USD 498.00 Million |
| Revenue forecast in 2033 | USD 970.66 Million |
| Growth rate | CAGR of 8.7% from 2025 to 2033 |
| Actual data | 2021 - 2024 |
| Forecast period | 2025 - 2033 |
| Quantitative units | Revenue in USD Million and CAGR from 2025 to 2033 |
| Report coverage | Revenue forecast, company share, competitive landscape, growth factors, and trends |
| Segments covered | Product Type, Application, End-Use Industry, Distribution Channel |
| Regional scope | North America; Europe; Asia Pacific; Rest of Asia Pacific; Latin America; Middle East & Africa |
| Country scope | United States; Canada; Germany; France; Italy; United Kingdom; Spain; Russia; Rest of Europe; China; Japan; South Korea; India; Australia; South East Asia (SEA; All; Mexico; Brazil; Rest of Latin America; Saudi Arabia; South Africa; United Arab Emirates; Rest of Middle East & Africa |
| Key companies profiled | 3DXTECH; Markforged; Toray Industries; Hexcel Corporation; SGL Carbon; Solvay; Mitsubishi Chemical Corporation; Teijin Limited; Ningbo Shengtong New Materials; Arevo; Polymaker; CRP Technology; ZOLTEK (A Toray Company); Stratasys; BASF Forward AM; Prusa Research; MatterHackers; SABIC; Owens Corning; Tractus3D |
| Customization scope | Free report customization (equivalent to 8 analysts working days) with purchase. Addition or alteration to country, regional & segment scope. |
| Pricing and purchase options | Avail customized purchase options to meet your exact research needs. Explore purchase options |
Growth Catalysts & Market Constraints
The Carbon Fiber Reinforced Filament market is navigating a period of dynamic shifts, propelled by evolving industrial demands and technological advancements while confronting specific hurdles. Understanding these market dynamics is crucial for stakeholders to formulate effective strategies and capitalize on emerging opportunities. The growing adoption of additive manufacturing across sectors demanding high-performance materials is a primary accelerator for the Carbon Fiber Reinforced Filament market size. However, cost implications and material complexity present notable challenges, influencing the overall growth forecast. Continuous innovation in filament compositions and 3D printing hardware is poised to shape the future trajectory of the industry. These intertwined factors are collectively driving the Carbon Fiber Reinforced Filament market forward, yet also necessitating strategic responses to maintain sustainable growth and industry expansion.
Growth Drivers
- Increasing demand for lightweight and high-strength materials in industries such as aerospace, automotive, and defense is a significant driver. Carbon fiber reinforced filaments enable the production of components that reduce overall weight, enhance fuel efficiency, and improve structural integrity, directly contributing to superior performance and operational cost savings in critical applications.
- Advancements in 3D printing technology, particularly in industrial-grade systems, are expanding the capabilities and accessibility of carbon fiber reinforced filaments. These technological improvements facilitate the creation of complex geometries with enhanced precision and repeatability, accelerating the adoption of these specialized filaments for functional prototyping and end-use part manufacturing.
Restraints
- The high cost associated with carbon fiber reinforced filaments compared to conventional plastic filaments poses a significant restraint, particularly for small and medium-sized enterprises. This cost barrier can limit widespread adoption, especially for applications where the enhanced mechanical properties do not justify the premium price, impacting market penetration in cost-sensitive sectors.
- Challenges related to material processing and printability, such as nozzle wear, warping, and poor layer adhesion, hinder broader market acceptance. Optimizing print parameters and developing specialized hardware to handle abrasive carbon fiber particles require significant investment and expertise, which can deter potential users and slow down market growth.
Opportunities
- The burgeoning demand for customized and on-demand manufacturing solutions presents a substantial opportunity for carbon fiber reinforced filaments. Industries are increasingly seeking rapid production of specialized tools, jigs, fixtures, and low-volume end-use parts, for which 3D printing with these advanced materials offers an efficient and cost-effective alternative to traditional manufacturing.
- Emerging applications in consumer electronics, sports equipment, and medical prosthetics offer new avenues for market expansion. As manufacturing costs decrease and material properties improve, carbon fiber reinforced filaments can address the need for durable, lightweight, and aesthetically pleasing products in these high-growth consumer-facing sectors.
Challenges
- Ensuring consistent quality and standardization across different manufacturers remains a critical challenge. Variations in fiber loading, dispersion, and polymer matrix can lead to unpredictable material performance, creating hurdles for critical applications that require stringent quality control and material certifications, thereby impacting market trust.
- The lack of comprehensive recycling infrastructure for carbon fiber reinforced plastic waste presents an environmental and economic challenge. As the adoption of these materials grows, developing sustainable end-of-life solutions and recycling processes will be crucial to mitigate environmental impact and promote a circular economy within the industry.
Market Level Breakdown
The Carbon Fiber Reinforced Filament market segmentation by Product Type categorizes the offerings into Continuous Carbon Fiber Reinforced Filament and Chopped Carbon Fiber Reinforced Filament. Continuous fibers provide maximum strength and stiffness, ideal for structural components, while chopped fibers offer enhanced printability and isotropic properties. The choice between these types significantly impacts a component's mechanical performance and manufacturing process, contributing to the overall market size and diverse application landscape.
Segmentation by Application delineates the primary end-use sectors driving demand for carbon fiber reinforced filaments. Key applications include Aerospace & Defense, Automotive, Medical, Industrial, and Consumer Goods. Each segment leverages the unique properties of these filaments to address specific needs, from lightweighting in vehicles to custom prosthetics in healthcare, directly influencing the Carbon Fiber Reinforced Filament market growth and technological advancements. This diversified application base is a testament to the versatility of the material.
The End-Use Industry segment further refines the market by identifying the specific industries consuming these filaments, such as 3D Printing Service Providers, Aerospace & Defense Manufacturers, Automotive Manufacturers, and Medical Device Manufacturers. These industries utilize carbon fiber reinforced filaments for various purposes, including tooling, prototyping, and direct part manufacturing. Their specific requirements for material performance and regulatory compliance significantly shape product development and market dynamics.
Segmentation by Distribution Channel examines the primary routes through which carbon fiber reinforced filaments reach end-users, predominantly Direct Sales and Distributors. Direct sales often cater to large industrial clients with specific technical requirements, fostering close collaboration between manufacturers and users. Distributors, conversely, provide broader market reach and support for a wider range of customers, including smaller businesses and individual users, impacting market accessibility and overall Carbon Fiber Reinforced Filament segmentation.
Carbon Fiber Reinforced Filament Segmentation Breakdown
- Product Type
- Continuous Carbon Fiber Filament
- Short Carbon Fiber Filament
- Long Carbon Fiber Filament
- Application
- Aerospace & Defense
- Automotive
- Consumer Goods
- Industrial
- Sports & Leisure
- Others
- End-Use Industry
- Aerospace
- Automotive
- Electronics
- Construction
- Others
- Distribution Channel
- Online
- Offline
Geographic Performance & Regional Trends
Geographically, North America emerged as the largest market for Carbon Fiber Reinforced Filament in 2025, primarily due to robust investments in aerospace and defense, advanced manufacturing infrastructure, and a high adoption rate of 3D printing technologies. The region's strong R&D capabilities and early adoption of innovative materials contribute significantly to its market leadership. Meanwhile, Asia Pacific is projected to be the fastest-growing market, driven by rapid industrialization, increasing foreign direct investment in manufacturing, and burgeoning demand from automotive and consumer electronics sectors, particularly in countries like China and India, indicating substantial Carbon Fiber Reinforced Filament market growth potential.
Regional Growth Drivers
- North America: The region benefits from a well-established aerospace and defense industry and significant government funding for advanced materials research. High adoption of industrial 3D printing across the United States and Canada for prototyping and functional parts drives demand, supported by a strong innovation ecosystem and a focus on high-performance applications.
- Europe: Stringent environmental regulations promoting lightweighting in the automotive and aviation sectors, coupled with substantial investments in additive manufacturing research, propel market growth. Countries like Germany, the United Kingdom, and France are at the forefront of adopting these materials for industrial and medical applications, fostering innovation and sustainable practices.
- Asia Pacific: Rapid industrialization, increasing manufacturing output, and a growing middle-class demand for consumer goods contribute to significant market expansion. Strong government support for local manufacturing in China, Japan, and India, along with rising investments in 3D printing infrastructure, are accelerating the adoption of carbon fiber reinforced filaments.
- Latin America: Modernization of industrial sectors and increasing foreign investments in automotive and construction industries are stimulating demand for advanced materials. Countries such as Brazil and Mexico are gradually integrating 3D printing technologies, creating new opportunities for carbon fiber reinforced filaments in tooling and specialized component production.
- Middle East & Africa: Diversification efforts away from oil-dependent economies into advanced manufacturing, aerospace, and defense sectors are driving market interest. Government initiatives in countries like Saudi Arabia and United Arab Emirates to build local manufacturing capabilities are fostering the adoption of high-performance materials for critical infrastructure and specialized applications.
The regional landscape for Carbon Fiber Reinforced Filament market indicates a clear distinction between mature and emerging economies. North America and Europe, with their established industrial bases, will continue to innovate and refine high-end applications, focusing on performance and customization. Conversely, Asia Pacific and Latin America are poised for exponential growth, driven by industrial expansion, infrastructure development, and increasing accessibility to 3D printing technologies. This divergence necessitates a tailored strategic approach for suppliers, emphasizing technological partnerships and localized production in high-growth regions while maintaining a focus on premium, specialized solutions in mature markets to capture sustained value.
Competitive Insights & Leading Companies
The Carbon Fiber Reinforced Filament competitive landscape is characterized by a moderately consolidated structure, featuring a mix of established chemical giants, specialized material manufacturers, and innovative 3D printing material developers. Global players like Toray Industries and Hexcel Corporation leverage their extensive experience in carbon fiber production to offer high-quality base materials, often integrating vertically to produce filaments. Regional players, on the other hand, focus on niche applications or specific polymer matrices, offering tailored solutions to local industries. Competitive levers in this market primarily revolve around product innovation, focusing on enhancing printability, mechanical properties, and compatibility with various 3D printing systems. Pricing strategies are crucial, balancing the premium cost of carbon fiber with the performance benefits offered. Additionally, strong distribution networks and technical support are vital for market penetration, ensuring widespread adoption and customer satisfaction. The ability to secure regulatory approvals and certifications for use in critical applications, particularly in aerospace and medical sectors, also acts as a significant differentiator, influencing market share and competitive positioning within the Carbon Fiber Reinforced Filament market.
Companies in the Carbon Fiber Reinforced Filament market employ diverse strategies to gain a competitive edge. Many engage in mergers and acquisitions (M&A) to expand their product portfolios, acquire new technologies, or consolidate market share. Strategic partnerships with 3D printer manufacturers are common, ensuring material compatibility and optimizing print profiles for enhanced performance. Product launches are frequent, with an emphasis on developing filaments with improved thermal resistance, chemical inertness, and ease of use. R&D investments are concentrated on exploring new polymer matrices, optimizing fiber dispersion, and developing sustainable alternatives. Differentiation is achieved through superior material performance, offering filaments with specialized properties for extreme environments, or by providing comprehensive technical support and customization services. Some players focus on cost advantages through efficient manufacturing processes, while others prioritize brand reputation and reliability. However, the industry faces challenges such as margin pressure due to intense competition and the high cost of raw materials. Compliance costs associated with meeting stringent industry standards, especially in regulated sectors, also pose a significant hurdle, requiring continuous investment in testing and certification to maintain market relevance in the Carbon Fiber Reinforced Filament key players segment.
Carbon Fiber Reinforced Filament Key Companies
- 3DXTECH
- Markforged
- Toray Industries
- Hexcel Corporation
- SGL Carbon
- Solvay
- Mitsubishi Chemical Corporation
- Teijin Limited
- Ningbo Shengtong New Materials
- Arevo
- Polymaker
- CRP Technology
- ZOLTEK (A Toray Company)
- Stratasys
- BASF Forward AM
- Prusa Research
- MatterHackers
- SABIC
- Owens Corning
- Tractus3D
Carbon Fiber Reinforced Filament Market Ecosystem
Ecosystem Participants
- Raw Material Suppliers — Provide essential base materials such as carbon fibers, polymer resins (e.g., PLA, ABS, Nylon, PEEK), and various additives. Their role is critical in ensuring the consistent quality, mechanical properties, and cost-effectiveness of the final filament. Innovations in fiber manufacturing and polymer chemistry directly impact the performance and application scope of carbon fiber reinforced filaments.
- Carbon Fiber Manufacturers — Specialize in producing high-strength carbon fibers from precursors like polyacrylonitrile (PAN) or pitch. Key players in this segment include Toray Industries, Hexcel Corporation, and Teijin Limited, whose expertise dictates the quality, diameter, and surface treatment of the fibers, which are crucial for optimal bonding with polymer matrices.
- Polymer Resin Producers — Supply the thermoplastic matrices that encapsulate the carbon fibers. Companies like Solvay, BASF, and SABIC develop and optimize resins for specific 3D printing processes, focusing on properties like melt flow index, thermal stability, and adhesion to ensure successful filament extrusion and printing performance.
- Filament Manufacturers/Compounders — These companies acquire carbon fibers and polymer resins to compound and extrude them into finished carbon fiber reinforced filaments. They focus on achieving optimal fiber dispersion, consistent filament diameter, and specific material properties for various 3D printing technologies, acting as a crucial link between raw material and end-user. Examples include 3DXTECH and Polymaker.
- 3D Printer Manufacturers — Develop and supply the hardware capable of processing carbon fiber reinforced filaments. This includes Fused Deposition Modeling (FDM)/Fused Filament Fabrication (FFF) printers with specialized nozzles, heated beds, and enclosed build chambers to handle the abrasive and high-temperature requirements of these advanced materials. Companies like Markforged and Stratasys are prominent in this segment.
- Software and Slicing Solution Providers — Develop the software that translates 3D models into printable instructions (G-code) for 3D printers. Their role involves optimizing print parameters such as infill patterns, layer height, and support structures specifically for carbon fiber reinforced filaments to ensure successful prints and desired mechanical properties. This is often integrated into printer ecosystems or offered by third-party developers.
- 3D Printing Service Bureaus — Offer on-demand 3D printing services using carbon fiber reinforced filaments for prototyping, tooling, and small-batch production. They cater to businesses that lack in-house 3D printing capabilities or require specialized expertise, providing access to advanced materials and technologies without significant capital investment.
- End-Use Industries/Customers — These are the ultimate consumers of carbon fiber reinforced filaments, spanning aerospace & defense, automotive, medical, industrial, and consumer goods sectors. Their specific application requirements for strength, weight reduction, and durability drive the demand and innovation in the entire ecosystem, influencing material development and manufacturing processes.
- Research and Development Institutions — Universities, private research labs, and government agencies contribute to fundamental and applied research in carbon fiber composites, additive manufacturing, and material characterization. Their efforts lead to new material formulations, process improvements, and expanded application possibilities, fostering long-term growth and innovation within the market.
Report Coverage & Key Deliverables
The report delivers a comprehensive analysis of the Carbon Fiber Reinforced Filament, combining quantitative data with qualitative insights to provide a holistic view of the market landscape. It is meticulously designed to equip business leaders, investors, and strategic planners with actionable intelligence necessary for informed decision-making. By presenting a detailed market overview, growth drivers, restraints, opportunities, and challenges, the report offers a clear understanding of the forces shaping the industry. Furthermore, it delves into market segmentation, competitive benchmarking, and regional performance, offering granular insights into various market facets. This robust framework ensures that stakeholders can effectively identify emerging trends, assess competitive strengths, and formulate resilient growth strategies. The report’s scope is tailored to address critical business questions, providing a forward-looking perspective on the Carbon Fiber Reinforced Filament market's trajectory and potential for innovation, making it an indispensable resource for navigating this dynamic sector.
Report Coverage
- Market Size Estimates (historical and forecast)
- This section provides precise market valuation figures for the Carbon Fiber Reinforced Filament market from 2021 to 2025 (historical data) and offers robust projections from 2026 up to 2033 (forecast period). Our methodology involves a triangulation of primary and secondary research, coupled with econometric modeling, to ensure the highest accuracy in market sizing and growth rate estimations. These estimates are presented in USD Million, offering a consistent and comparable metric across all market segments and regions.
- Detailed Segmentation And Revenue Analysis
- The report offers an in-depth breakdown of the market by Product Type, Application, End-Use Industry, and Distribution Channel, providing revenue analysis for each sub-segment. This granular segmentation allows stakeholders to understand the specific contributions of various market components, identify high-growth areas, and tailor product development and marketing strategies to target lucrative niches within the Carbon Fiber Reinforced Filament industry effectively.
- Regional And Country-Level Insights
- A comprehensive analysis of market performance across key regions such as North America, Europe, Asia Pacific, Latin America, and Middle East & Africa is included. This section highlights regional market sizes, growth rates, and key trends, offering insights into market maturity, regulatory environments, and consumer preferences at both regional and major country levels. This helps in identifying geographical opportunities and risks.
- Competitive Benchmarking Of Key Players
- This section provides a strategic overview of the competitive landscape, profiling leading companies in the Carbon Fiber Reinforced Filament market. It includes an analysis of their market positioning, product portfolios, recent developments, and strategic initiatives such as partnerships, mergers, and acquisitions. This benchmarking helps in understanding competitive dynamics, identifying key differentiators, and assessing potential threats and collaborations.
- Customization Options Based on Specific Requirements
- The report offers extensive customization options, allowing clients to tailor the study to their specific business needs. This includes additional segment breakdowns, deeper regional or country-level analysis, competitive intelligence on specific companies, or focused insights on emerging applications. Our expert analysts provide up to 80 hours of post-purchase support, ensuring the report delivers maximum value and relevance to your strategic objectives.
Recent Industry Insights
The Carbon Fiber Reinforced Filament industry has witnessed a surge of strategic activities and technological advancements over the past 12-18 months, reflecting its dynamic growth trajectory. Key developments include significant investments in R&D to enhance material properties and printability, alongside a notable increase in partnerships between filament manufacturers and 3D printer developers. These collaborations aim to optimize material-printer ecosystems, ensuring seamless integration and improved end-part performance. Furthermore, there's been a growing emphasis on sustainable practices, with companies exploring bio-based polymer matrices and recycling solutions for carbon fiber composites. Regulatory discussions around material standards for critical applications are also gaining traction, influencing product certification and market access. These Carbon Fiber Reinforced Filament industry trends underscore a concerted effort to expand application versatility and address environmental concerns, shaping the market's future outlook.
Key Market Developments
- October 2024: Markforged launched new carbon fiber reinforced materials optimized for its industrial 3D printers, promising enhanced strength and lighter parts for aerospace and automotive applications.
- August 2024: Toray Industries announced a strategic partnership with a leading additive manufacturing software provider to develop integrated solutions for advanced carbon fiber composite printing.
- June 2024: Hexcel Corporation invested in expanding its production capacity for high-performance carbon fibers, anticipating increased demand from composite and 3D printing markets globally.
- April 2024: Solvay introduced a new line of medical-grade carbon fiber reinforced filaments designed for biocompatible applications, targeting the growing demand for custom surgical guides and prosthetics.
- February 2024: 3DXTECH acquired a specialized compounding facility to bolster its production of engineering-grade carbon fiber reinforced filaments, enhancing its market position in North America.
- December 2023: China saw significant government funding allocated to research and development of domestic high-performance composite materials, including carbon fiber for additive manufacturing.
Analyst Opinion
The Carbon Fiber Reinforced Filament market presents a highly attractive investment proposition, driven by the irreversible trend towards lightweighting and high-performance materials across critical industries. Market attractiveness is bolstered by the continuous evolution of additive manufacturing technologies, which are making these advanced materials more accessible and cost-effective. The competitive intensity, while moderately consolidated by a few large players, also features a vibrant ecosystem of specialized manufacturers and innovative startups, fostering a healthy environment for product development and application expansion. The demand-supply balance is currently favorable, with demand steadily outstripping supply in niche, high-value applications, creating opportunities for new entrants and existing players to scale production. However, raw material price volatility and the complexity of manufacturing processes remain key factors influencing profitability and market entry barriers. Overall, the Carbon Fiber Reinforced Filament market outlook is robust, indicating sustained growth fueled by technological integration and expanding industrial adoption.
Looking ahead, the long-term outlook for the Carbon Fiber Reinforced Filament market remains exceptionally positive, underpinned by the increasing strategic importance of additive manufacturing in global supply chains. The innovation landscape is rich, with ongoing research focused on developing new polymer matrices, enhancing fiber-matrix adhesion, and exploring multi-material printing capabilities. This continuous innovation promises to unlock even broader applications, from highly customized consumer products to mission-critical aerospace components. Key risk factors include the potential for intellectual property infringement, the need for stringent quality control in critical applications, and the development of alternative advanced materials that could offer similar performance at lower costs. Strategic implications for market participants involve focusing on vertical integration, fostering strong partnerships with 3D printer manufacturers, and investing heavily in R&D to maintain a competitive edge. Companies that can effectively address the balance between cost, performance, and sustainability will be best positioned to capitalize on the sustained growth of this transformative Carbon Fiber Reinforced Filament market.