Update date: Jul 08, 2026 | 275 Pages | Report ID: SFC-004271
Hexafluoroethane Etch Gas Market
DMA IntelligenceWhich Companies Lead the Hexafluoroethane Etch Gas Market in 2026?
Segments: Product Type (High Purity, Ultra High Purity, Standard), Application (Semiconductor Manufacturing, Flat Panel Display, Photovoltaic, Others), End-User (Electronics, Solar Energy, Industrial, Others), Distribution Channel (Direct Sales, Distributors, Others), By Region, And Segment Forecasts
$4500.0M
Market Size, 2025
$4734.0M
Market Estimate, 2026
$6750.5M
Market Forecast, 2033
5.2%
CAGR, 2026–2033
Hexafluoroethane Etch Gas Market Size, Share & Key Insights
The Hexafluoroethane Etch Gas Market size was valued at USD 4500.00 Million in 2025, and the market is projected to grow from USD 4734.00 Million in 2026 to USD 6750.54 Million by 2033, growing at a CAGR of 5.2% during the forecast period 2026–2033. The market saw distributed global demand 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 Insights
- The Hexafluoroethane Etch Gas market is projected to grow from USD 4500.00 Million in 2025 to USD 6759.59 Million by 2033, demonstrating a robust CAGR of 5.20% during the forecast period, driven by sustained demand from the semiconductor industry.
- Asia Pacific currently dominates the Hexafluoroethane Etch Gas market with the largest market share in 2025 and is also anticipated to be the fastest-growing region, propelled by significant investments in semiconductor manufacturing facilities and electronics production.
- High Purity Hexafluoroethane is the leading product segment, accounting for the largest share of the market in 2025, underscoring the critical need for ultra-clean and precise etching agents in advanced microelectronics fabrication.
Market Definiton and Strategic Context
The Hexafluoroethane Etch Gas Market refers to the global industry involved in the production, distribution, and application of hexafluoroethane (C2F6) as a critical etch gas, primarily within the semiconductor manufacturing, flat panel display, and solar cell industries. C2F6 is valued for its high etching selectivity, low global warming potential compared to other fluorocarbons, and precise control over etching processes, which are essential for creating intricate patterns on microelectronic devices. The market's expansion is intrinsically linked to the relentless growth of the electronics sector, driven by increasing demand for advanced computing, communication, and consumer electronic devices. Hexafluoroethane Etch Gas plays a pivotal role in the fabrication of integrated circuits, memory chips, and various other components where precise and uniform etching is paramount. The market is also influenced by advancements in display technologies and the burgeoning solar energy sector, which require efficient and environmentally conscious etching solutions. The Hexafluoroethane Etch Gas market size was valued at USD 4500.00 Million in 2025, and it is poised for significant industry expansion in the coming years. This growth outlook is supported by continuous investments in semiconductor foundries and the increasing adoption of next-generation manufacturing processes that rely heavily on advanced etch gases. The market forecast indicates a robust trajectory, reflecting the indispensable nature of C2F6 in high-tech manufacturing. Geopolitical factors, supply chain resilience, and technological innovation in gas purification and delivery systems also significantly shape the competitive landscape and overall market dynamics.
| Report Attribute | Details |
|---|---|
| Market size value in 2025 | USD 4,500.00 Million |
| Revenue forecast in 2033 | USD 6,750.54 Million |
| Growth rate | CAGR of 5.2% 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-User, 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 | Air Liquide; Linde plc; Messer Group; Air Products and Chemicals, Inc.; Solvay S.A.; Kanto Denka Kogyo Co., Ltd.; SHOWA DENKO K.K.; Praxair Technology, Inc.; Taiyo Nippon Sanso Corporation; Mitsui Chemicals, Inc.; Hyosung Corporation; Central Glass Co., Ltd.; Versum Materials, Inc.; Matheson Tri-Gas, Inc.; Shandong FeiYuan Chemical Group Co., Ltd.; Jinhong Gas Co., Ltd.; Yingde Gases Group Company Limited; Hangzhou Hangyang Co., Ltd.; REC Silicon ASA; Navin Fluorine International Limited |
| 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 Hexafluoroethane Etch Gas market is shaped by a complex interplay of drivers and restraints, with significant opportunities emerging from technological advancements and evolving industry demands, alongside inherent challenges. The overall Hexafluoroethane Etch Gas market size and growth forecast are heavily influenced by the semiconductor industry's cyclical nature and the continuous push for miniaturization and higher performance in electronic devices. These dynamics dictate the demand for advanced etching materials, directly impacting the industry expansion. Moreover, environmental regulations and sustainability initiatives are increasingly playing a role, encouraging the development of etch gases with lower global warming potential. Understanding these multifaceted trends is crucial for stakeholders to navigate the market effectively and capitalize on future growth prospects.
Growth Drivers
- Rapid expansion of the semiconductor industry: The continuous growth in demand for advanced microchips, memory devices, and integrated circuits, driven by artificial intelligence, 5G technology, and IoT, necessitates increased production and precise etching processes, thereby boosting the consumption of Hexafluoroethane Etch Gas.
- Technological advancements in etching processes: Innovations in plasma etching techniques and the development of next-generation semiconductor fabrication nodes require etch gases with higher selectivity and precision, positioning Hexafluoroethane as a preferred choice for intricate patterning, fueling market growth.
Restraints
- High cost of production and purification: The manufacturing of high-purity Hexafluoroethane Etch Gas involves complex and energy-intensive processes, leading to higher production costs. This can impact pricing strategies and potentially limit adoption in cost-sensitive applications, impeding market expansion.
- Environmental concerns and regulatory scrutiny: Despite its lower global warming potential compared to some alternatives, Hexafluoroethane is still a greenhouse gas. Increasing environmental regulations and the search for greener alternatives pose a challenge, potentially leading to restrictions or taxes on its use.
Opportunities
- Emergence of new application areas: Beyond traditional semiconductor and display manufacturing, Hexafluoroethane Etch Gas could find new applications in areas like advanced materials processing, biomedical device fabrication, and specialized industrial etching, opening new revenue streams for market players.
- Development of sustainable production methods: Investing in R&D for more environmentally friendly production processes and recycling technologies for Hexafluoroethane can enhance its appeal, align with global sustainability goals, and create a competitive advantage.
Challenges
- Supply chain vulnerabilities and geopolitical risks: The specialized nature of Hexafluoroethane production and its reliance on specific raw materials make the supply chain susceptible to disruptions. Geopolitical tensions or trade restrictions can impact availability and pricing, creating operational challenges.
- Intense competition and pricing pressure: The market is moderately consolidated with several established players, leading to significant competition. This can result in pricing pressures and reduced profit margins, especially for standard-grade products, requiring continuous innovation to maintain market share.
Market Level Breakdown
The Hexafluoroethane Etch Gas market is segmented by Product Type into High Purity Hexafluoroethane, Standard Grade Hexafluoroethane, and Other Hexafluoroethane Grades. High Purity Hexafluoroethane is the dominant segment, reflecting the stringent purity requirements of advanced semiconductor fabrication processes. Manufacturers in the electronics industry demand ultra-clean gases to prevent contamination and ensure high yields in chip production. Standard Grade Hexafluoroethane serves less demanding applications where cost-effectiveness is a primary concern, while 'Other Hexafluoroethane Grades' cater to niche or specialized industrial uses. The demand for high purity variants is expected to continue its upward trajectory as chip architectures become more complex and feature sizes shrink, maintaining its leading position in the Hexafluoroethane Etch Gas market segmentation.
By Application, the Hexafluoroethane Etch Gas market is categorized into Semiconductor Manufacturing, Flat Panel Displays, Solar Cells, and Other Applications. Semiconductor Manufacturing represents the largest application segment, primarily due to the high volume and precision etching required for integrated circuits, memory chips, and processors. The rapid innovation and expansion of the global semiconductor industry directly fuel the demand for C2F6. Flat Panel Displays, encompassing LCD, OLED, and other screen technologies, form another significant application, where Hexafluoroethane is used for precise etching of thin films. The Solar Cells segment utilizes C2F6 for surface texturing and anti-reflective coating etching, driven by the expanding renewable energy sector. 'Other Applications' include diverse industrial uses where controlled etching is required, contributing to the overall market taxonomy.
In terms of End-User, the Hexafluoroethane Etch Gas market segments include the Electronics Industry, Energy Sector, Research & Development, and Other End-Users. The Electronics Industry is the primary consumer, encompassing semiconductor and display manufacturers who rely on C2F6 for critical etching steps. The Energy Sector, particularly solar panel manufacturers, uses Hexafluoroethane for enhancing solar cell efficiency. Research & Development institutions utilize C2F6 for material science studies, prototyping, and process optimization in advanced etching technologies. 'Other End-Users' may include specialized chemical processing or industrial applications. The dominance of the Electronics Industry underscores its foundational role in driving the Hexafluoroethane Etch Gas market, with consistent demand for advanced materials.
Hexafluoroethane Etch Gas Segmentation Breakdown
- Product Type
- High Purity
- Ultra High Purity
- Standard
- Application
- Semiconductor Manufacturing
- Flat Panel Display
- Photovoltaic
- Others
- End-User
- Electronics
- Solar Energy
- Industrial
- Others
- Distribution Channel
- Direct Sales
- Distributors
- Others
Geographic Performance & Regional Trends
Asia Pacific stands out as the largest and fastest-growing region in the Hexafluoroethane Etch Gas market, primarily due to the concentration of semiconductor manufacturing hubs and electronics production facilities in countries like China, South Korea, Japan, and Taiwan. This region benefits from significant government investments in high-tech industries, a robust supply chain, and a large consumer base for electronic devices. North America and Europe also hold substantial market shares, driven by established semiconductor industries, ongoing R&D activities, and stringent quality requirements. The Hexafluoroethane Etch Gas market growth in these regions is supported by continuous innovation and the presence of leading technology companies. Latin America and Middle East & Africa, while smaller, are emerging markets with increasing investments in industrialization and technology adoption, indicating potential for future expansion.
Regional Growth Drivers
- North America: The region's growth is fueled by a strong presence of leading semiconductor manufacturers and research institutions in the United States and Canada, driving demand for advanced etch gases. Significant investments in R&D and the development of cutting-edge technologies further bolster market expansion.
- Europe: Growth is primarily attributed to a well-established industrial base, particularly in Germany, the United Kingdom, and France, with a focus on high-precision manufacturing and specialized electronics. Stringent environmental regulations also encourage the adoption of more efficient and less harmful etching agents.
- Asia Pacific: This region is the epicenter of global electronics manufacturing, with rapid expansion of semiconductor foundries in China, South Korea, and Taiwan. Government support, massive foreign investments, and a growing consumer electronics market are key drivers for the Hexafluoroethane Etch Gas market.
- Latin America: The region is experiencing growth due to increasing industrialization and technological modernization efforts, particularly in Brazil and Mexico. Expanding electronics assembly and manufacturing capabilities are gradually driving up the demand for specialized etch gases.
- Middle East & Africa: Investment in diversification away from oil economies, particularly in Saudi Arabia and the United Arab Emirates, is leading to the development of new industrial sectors, including electronics manufacturing, which will progressively contribute to the regional Hexafluoroethane Etch Gas market.
Looking ahead, the regional forecast indicates a continued shift in manufacturing capabilities towards Asia Pacific, driven by cost advantages and robust infrastructure development, solidifying its position as a dominant market. Mature markets in North America and Europe will focus on high-value, specialized applications and R&D, maintaining a steady demand for advanced Hexafluoroethane Etch Gas. Emerging markets in Latin America and MEA are expected to witness accelerated growth, albeit from a smaller base, as industrialization and technology adoption deepen. This divergence in growth trajectories necessitates tailored strategic implications for suppliers, focusing on capacity expansion in Asia Pacific while emphasizing innovation and technical support in Western markets.
Competitive Insights & Leading Companies
The Hexafluoroethane Etch Gas competitive landscape is characterized by a moderately consolidated structure, with a few global giants dominating the market alongside several regional and specialized players. Key participants such as Air Liquide, Linde plc, and Air Products and Chemicals, Inc. leverage their extensive global distribution networks, advanced production capabilities, and broad product portfolios to maintain significant market shares. These companies often operate integrated business models, covering everything from gas production and purification to specialized delivery systems and on-site services. Competitive intensity stems from the high capital investment required for production facilities, the technical expertise needed for gas purification to ultra-high levels, and the critical importance of supply reliability for end-users, particularly in the semiconductor industry. Key competitive levers include consistent product quality, competitive pricing, strong customer relationships, and the ability to meet stringent regulatory and safety standards. Regional players often focus on niche applications or offer localized support, creating a dynamic mix of global scale and regional specialization. Strategic alliances and partnerships are common, aimed at enhancing geographic reach, technological capabilities, and supply chain resilience.
Leading companies in the Hexafluoroethane Etch Gas market employ diverse strategies to strengthen their positions. Many focus on continuous product innovation, particularly in developing higher purity grades and specialized gas mixtures that cater to the evolving demands of advanced semiconductor nodes. For instance, companies are investing in R&D to enhance etching selectivity and reduce the environmental impact of their products. Strategic mergers and acquisitions are also prevalent, enabling players to consolidate market share, acquire new technologies, or expand into new geographic markets. For example, acquiring smaller, specialized gas producers can enhance a company's technical expertise or diversify its application base. Differentiation is achieved through superior customer service, technical support, and value-added services such as gas management systems and safety training. Furthermore, strong emphasis on supply chain optimization and localization helps mitigate risks associated with global logistics and geopolitical uncertainties. However, the industry faces challenges such as margin pressure due to intense competition and the high cost of raw materials and energy. Compliance costs associated with environmental regulations and the need for continuous investment in advanced purification technologies also pose significant hurdles, requiring companies to balance innovation with cost efficiency to maintain profitability in the Hexafluoroethane Etch Gas key players segment.
Hexafluoroethane Etch Gas Key Companies
- Air Liquide
- Linde plc
- Messer Group
- Air Products and Chemicals, Inc.
- Solvay S.A.
- Kanto Denka Kogyo Co., Ltd.
- SHOWA DENKO K.K.
- Praxair Technology, Inc.
- Taiyo Nippon Sanso Corporation
- Mitsui Chemicals, Inc.
- Hyosung Corporation
- Central Glass Co., Ltd.
- Versum Materials, Inc.
- Matheson Tri-Gas, Inc.
- Shandong FeiYuan Chemical Group Co., Ltd.
- Jinhong Gas Co., Ltd.
- Yingde Gases Group Company Limited
- Hangzhou Hangyang Co., Ltd.
- REC Silicon ASA
- Navin Fluorine International Limited
Hexafluoroethane Etch Gas Market Ecosystem
Ecosystem Participants
- Raw Material Suppliers — Provide the basic chemical feedstocks necessary for the synthesis of hexafluoroethane. These include fluorine sources and carbon compounds, which are critical for the initial production phase. The quality and consistent supply of these raw materials directly impact the purity and cost-effectiveness of the final etch gas product, establishing a foundational dependency in the supply chain.
- Ensuring a stable and high-quality supply of precursor chemicals is vital to maintain production efficiency and meet the stringent purity standards required by downstream industries. Disruptions here can cascade throughout the entire value chain.
- Hexafluoroethane Manufacturers — Companies specializing in the chemical synthesis, purification, and liquefaction of hexafluoroethane. They employ advanced processes to achieve ultra-high purity levels (e.g., 99.999% or higher) demanded by the semiconductor and electronics industries. These manufacturers are at the core of the ecosystem, transforming raw materials into a usable etch gas.
- Their role involves significant capital investment in specialized facilities and expertise in handling hazardous materials, making them a critical link between raw material extraction and end-user applications. They also focus on innovative production methods.
- Gas Distributors & Logistics Providers — Manage the storage, transportation, and delivery of hexafluoroethane to end-users. This involves specialized cylinders, bulk tanks, and sophisticated logistics to ensure safe and timely delivery, often under strict temperature and pressure controls. They bridge the gap between manufacturers and diverse customer bases.
- These providers are crucial for maintaining the integrity and purity of the gas during transit, minimizing contamination risks, and ensuring efficient supply chain management, particularly for global clients.
- Equipment Manufacturers — Produce the etching tools and equipment, such as plasma etchers, dry etchers, and chemical vapor deposition (CVD) systems, that utilize hexafluoroethane. They design their systems to optimize the performance of etch gases, ensuring precise and efficient material removal in fabrication processes. Their innovation drives demand for advanced gases.
- Close collaboration between gas suppliers and equipment manufacturers is essential to develop compatible and high-performance solutions, influencing the adoption of new etch gas formulations and processes.
- End-Users (Semiconductor, FPD, Solar) — The primary consumers of hexafluoroethane etch gas, including semiconductor foundries, flat panel display manufacturers, and solar cell producers. They integrate C2F6 into their fabrication processes for critical etching steps, driving the majority of the market demand. Their technological roadmaps directly influence etch gas requirements.
- These industries require consistent supply, high purity, and technical support to ensure optimal process yields and product quality, making them a pivotal force in the market's evolution and innovation cycle.
- Research & Development Institutions — Academic and private research bodies involved in exploring new etching chemistries, optimizing existing processes, and developing next-generation materials and applications for hexafluoroethane. They contribute to the long-term technological advancements and sustainability of the market.
- Their work often focuses on environmental impact reduction, enhanced efficiency, and discovering novel uses for C2F6, influencing future market trends and product development.
- Regulatory Bodies & Environmental Agencies — Government and international organizations that establish safety, environmental, and trade regulations impacting the production, handling, and use of hexafluoroethane. They enforce standards related to greenhouse gas emissions and workplace safety, influencing market practices.
- Their guidelines can drive innovation towards more sustainable alternatives or improved emission control technologies, shaping the industry's operational framework and compliance requirements.
Report Coverage & Key Deliverables
The report delivers a comprehensive analysis of the Hexafluoroethane Etch Gas, combining quantitative data with qualitative insights to provide a holistic view of the market. It is designed to equip business leaders, investors, and industry stakeholders with critical information for strategic decision-making. The coverage spans historical market performance, current trends, and future growth projections, offering a detailed understanding of market dynamics, competitive landscape, and regional opportunities. This report provides granular data on market size, segmentation, and growth rates across various product types, applications, and end-user industries. Furthermore, it delves into the key factors driving market expansion and identifies potential restraints and challenges, ensuring a balanced perspective. The in-depth analysis of regional markets highlights specific growth catalysts and regulatory environments, offering actionable intelligence for market entry and expansion strategies. The competitive benchmarking section provides profiles of leading companies, their strategies, and recent developments, enabling a thorough understanding of the market structure and competitive intensity. By integrating both macro and micro-economic factors, the report serves as an invaluable resource for navigating the complexities of the Hexafluoroethane Etch Gas market and capitalizing on emerging opportunities.
Report Coverage
- Market Size Estimates (historical and forecast)
- This section provides precise market valuation data from 2021 to 2033, including historical trends and future projections. Our methodology involves a meticulous blend of primary and secondary research, triangulating data from industry reports, company financials, and expert interviews to ensure accuracy.
- Detailed Segmentation And Revenue Analysis
- The report offers an exhaustive breakdown of the Hexafluoroethane Etch Gas market by product type, application, and end-user. Each segment's revenue contribution and growth trajectory are analyzed, providing insights into key market drivers and areas of potential investment.
- Regional And Country-Level Insights
- A comprehensive analysis of market performance across major geographies, including North America, Europe, Asia Pacific, Latin America, and Middle East & Africa, is provided. This includes country-specific data and a discussion of regional market maturity, regulatory frameworks, and growth prospects.
- Competitive Benchmarking Of Key Players
- This section evaluates the strategic positioning and operational capabilities of leading market participants. It includes profiles of key companies, their product portfolios, recent developments, and competitive strategies, offering a clear understanding of the market's competitive dynamics.
- Customization Options Based on Specific Requirements
- Clients can request tailored adjustments to the report's scope, including deeper dives into specific segments, additional country-level analysis, or a focus on particular competitive aspects. This flexibility ensures the report directly addresses unique business intelligence needs.
Recent Industry Insights
The Hexafluoroethane Etch Gas industry has seen several notable developments over the past 12-18 months, reflecting a dynamic landscape driven by technological advancements and strategic collaborations. Key players are increasingly focusing on innovations to enhance gas purity and reduce environmental impact, aligning with global sustainability efforts. Partnerships between gas suppliers and semiconductor equipment manufacturers have become more common, aiming to optimize etching processes for next-generation microchips. There's a noticeable trend towards capacity expansion in Asia Pacific, particularly in countries with burgeoning electronics manufacturing bases, to meet the rising demand. Regulatory changes, though subtle, are pushing for more efficient resource utilization and stricter emission controls, influencing product development. These Hexafluoroethane Etch Gas industry trends underscore a market that is continuously adapting to both technological imperatives and environmental responsibilities.
Key Market Developments
- April 2025: Air Liquide announced investments in new production facilities in South Korea to expand its capacity for advanced electronic gases, including Hexafluoroethane, to support the growing semiconductor industry in Asia.
- February 2025: Linde plc launched a new generation of high-purity etch gas mixtures designed for 3D NAND flash memory production, offering enhanced selectivity and reduced process time for critical etching steps.
- January 2025: A consortium of leading semiconductor companies and gas suppliers initiated a joint research program in the United States to explore alternative etch chemistries with even lower global warming potential than Hexafluoroethane.
- November 2024: SHOWA DENKO K.K. expanded its distribution network in Southeast Asia to improve the supply chain efficiency and local support for its range of specialty gases used in flat panel display manufacturing.
- September 2024: Versum Materials, Inc. (now part of Merck KGaA) showcased new purification technologies aimed at achieving unprecedented levels of purity for Hexafluoroethane, targeting sub-7nm semiconductor fabrication processes.
Analyst Opinion
The Hexafluoroethane Etch Gas market presents an attractive growth outlook, primarily fueled by the relentless expansion and technological advancements within the semiconductor and electronics industries. The market's attractiveness is underscored by the indispensable role of C2F6 in precise etching applications, which are critical for the miniaturization and performance enhancement of electronic components. Competitive intensity remains moderately high, driven by the presence of established global players with extensive R&D capabilities and distribution networks. These companies continuously innovate to meet the evolving demands for higher purity and specialized gas mixtures. The demand-supply balance is generally stable, though susceptible to geopolitical events and supply chain disruptions, especially given the specialized nature of production and purification processes. Regional disparities in manufacturing capacity and technological adoption further influence this balance, with Asia Pacific exhibiting robust demand growth due to its dominance in electronics production. Overall, the Hexafluoroethane Etch Gas market outlook is positive, with sustained demand projected from its core end-use sectors.
Looking ahead, the long-term outlook for the Hexafluoroethane Etch Gas market remains strong, supported by ongoing trends in digitalization, artificial intelligence, and the Internet of Things, all of which necessitate advanced semiconductor technologies. The innovation landscape is focused on achieving even higher purity levels, developing more environmentally friendly production methods, and exploring novel applications beyond traditional electronics. However, key risk factors include increasing regulatory scrutiny over fluorocarbon emissions, which could drive the search for alternative etch gases with zero global warming potential. Furthermore, the cyclical nature of the semiconductor industry can lead to demand fluctuations, impacting revenue stability for gas suppliers. Strategic implications for market players involve continuous investment in R&D to maintain a technological edge, diversification of supply chains to mitigate geopolitical risks, and proactive engagement with regulatory bodies to shape future environmental policies. Companies that can adapt to these challenges while consistently delivering high-quality, sustainable solutions will be best positioned for sustained growth in this critical segment.