Product Code: FBI109046
Growth Factors of resist processing equipment Market
The global resist processing equipment market was valued at USD 2.31 billion in 2025. The market is projected to grow from USD 2.40 billion in 2026 to USD 3.32 billion by 2034, registering a CAGR of 4.10% during the forecast period (2026-2034). Asia Pacific dominated the global market with a 61.40% share in 2025, driven by strong semiconductor manufacturing capabilities and rising consumer electronics production.
Resist processing equipment is a critical component of semiconductor fabrication systems. It is used during photolithography to apply and develop photoresist materials on semiconductor wafers for circuit printing. These systems enhance precision, consistency, and efficiency in chip manufacturing processes.
Market Overview
The growth of the resist processing equipment market is closely linked to rising demand for advanced electronic devices, including smartphones, tablets, IoT devices, wearable technologies, and high-performance computing systems. The rapid expansion of the 5G sector further accelerates demand for semiconductor fabrication tools. According to the GSM Association, 5G networks are expected to cover one-third of the global population, reaching 1.2 billion connections by 2025, thereby fueling equipment demand.
Asia Pacific accounted for approximately USD 1.42 billion in 2025, reflecting its strong dominance in global semiconductor production hubs such as China, Taiwan, South Korea, and Japan.
Impact of COVID-19
The COVID-19 pandemic disrupted global semiconductor supply chains, delaying equipment production and delivery. Manufacturing halts and logistical bottlenecks affected resist processing equipment demand in 2020. For example, Tokyo Electron Limited reported a 9.3% decline in net sales in 2020 compared to 2019, while SUSS Micro Tec SE recorded an 18% increase during the same period.
Despite short-term disruptions, the pandemic accelerated adoption of technologies such as 5G, IoT, and cloud computing, supporting long-term semiconductor industry growth and stabilizing future demand for resist processing systems.
Market Trends
Technological Advancements and Industry 4.0 Integration
Manufacturers are introducing advanced systems integrated with Artificial Intelligence (AI), IoT, 5G connectivity, and Industry 4.0 automation. These technologies improve throughput, precision, scalability, and operational efficiency.
In November 2022, EV Group launched the EVG150 automated resist processing system designed for coating and photolithography applications. The system features high throughput capacity (up to 80%) and enhanced robustness. Increasing adoption of automation and smart manufacturing technologies represents a major market trend.
Market Growth Drivers
Rising Demand from Consumer Electronics and 5G
Growing demand for semiconductors across consumer electronics, automotive, telecommunications, and data center applications significantly drives the market. The integration of AI and IoT in smart appliances and connected devices increases reliance on advanced semiconductor fabrication processes.
The increasing adoption of silicon semiconductor wafers in 5G devices and electric vehicles across major markets such as the U.S. and China further boosts equipment demand.
Expanding MEMS and PCB Applications
Micro electromechanical systems (MEMS) captured the largest application share in 2024. Resist processing technology is widely used for photomask printing and wafer fabrication in MEMS devices, printed circuit boards (PCBs), and nanoscale structures.
Restraining Factors
High Equipment Costs
Resist processing equipment requires significant capital investment, ranging from USD 0.5 million to USD 2 million depending on specifications and capabilities. Fluctuating raw material costs and high installation expenses pose challenges, particularly for small and medium enterprises. These cost-related constraints may limit market expansion in certain regions.
Market Segmentation Analysis
By Mode of Operation
- Automated Segment: Dominated the market in 2024 and is expected to grow at the highest rate due to superior precision, consistency, and higher throughput capacity.
- Manual Segment: Expected to grow moderately due to lower cost and flexibility advantages for smaller-scale production.
By Equipment Type
- Photoresist Coating Equipment: Held the largest revenue share in 2024 and is projected to maintain strong growth due to increasing demand for small and medium semiconductor chips.
- Developer/Printer and Steppers: Growing steadily due to innovation in lithography.
- Others (Cleaning Equipment): Rising demand to prevent wafer defects supports segment growth.
By Application
- Micro Electromechanical Systems (MEMS): Largest revenue contributor in 2024 due to increasing use in IoT and consumer electronics.
- Printed Circuit Boards and Others: Moderate growth driven by advanced electronics manufacturing.
By End User
- Semiconductor and Microelectronics: Led the market in 2024 due to expansion in ICs, microprocessors, and memory devices.
- Photonics and Nanotechnology: Growing steadily with increasing adoption in healthcare and automotive electronics.
Regional Insights
- Asia Pacific: Dominated with 61.40% share in 2025 due to strong semiconductor supply chains and high consumer electronics production.
- North America: Expected to grow steadily, supported by major players and government semiconductor investments.
- Europe: Moderate growth driven by automotive electronics demand.
- Middle East & Africa: Gradual growth due to rising adoption of advanced electronics.
Key Industry Players
Leading companies in the resist processing equipment market include ASML Holding N.V., Fujifilm Holdings Corporation, JEOL Ltd, EV Group, Lam Research Corporation, Nikon Corporation, Obducat AB (Publ), Screen Semiconductor Solutions Co Ltd, SUSS Micro Tec SE, and Tokyo Electron Limited. These players are investing in semiconductor materials, R&D, and strategic collaborations to enhance competitive positioning.
Conclusion
The global resist processing equipment market is projected to grow steadily from USD 2.31 billion in 2025 to USD 3.32 billion by 2034, supported by expanding semiconductor manufacturing, rising 5G adoption, and increasing demand for consumer electronics. While high equipment costs may pose challenges, ongoing technological advancements, automation integration, and strong growth in Asia Pacific are expected to sustain long-term market expansion during the forecast period.
Segmentation By Mode of Operation, Equipment Type, Application, End User, and Region
Segmentation By Mode of Operation
By Equipment Type
- Photoresist Coating Equipment
- Photoresist Developer/Printer
- Photoresist Steppers
- Others (Cleaning Equipment)
By Application
- Micro Electromechanical System
- Printed Circuit Board
- Others (Silicon Wafers)
By End User
- Semiconductor and Microelectronics
- Photonics
- Nanotechnology
- Others (Lithography)
By Region
- North America (By Mode of Operation, By Equipment Type, By Application, By End User, and By Country)
- U.S. (By Equipment Type)
- Canada (By Equipment Type)
- Mexico (By Equipment Type)
- Europe (By Mode of Operation, By Equipment Type, By Application, By End User, and By Country)
- Germany (By Equipment Type)
- U.K. (By Equipment Type)
- France (By Equipment Type)
- Italy (By Equipment Type)
- Spain (By Equipment Type)
- Nordics (By Equipment Type)
- Benelux (By Equipment Type)
- Rest of Europe
- Asia Pacific (By Mode of Operation, By Equipment Type, By Application, By End User, and By Country)
- China (By Equipment Type)
- Japan (By Equipment Type)
- India (By Equipment Type)
- South Korea (By Equipment Type)
- Southeast Asia (By Equipment Type)
- Rest of the Asia Pacific
- Middle East & Africa (By Mode of Operation, By Equipment Type, By Application, By End User, and By Country)
- GCC (By Equipment Type)
- South Africa (By Equipment Type)
- Rest of the Middle East & Africa
- South America (By Mode of Operation, By Equipment Type, By Application, By End User, and By Country)
- Brazil (By Equipment Type)
- Argentina (By Equipment Type)
- Rest of South America
Table of Content
1. Introduction
- 1.1. Definition, By Segment
- 1.2. Research Methodology/Approach
- 1.3. Data Sources
2. Executive Summary
3. Market Dynamics
- 3.1. Macro and Micro Economic Indicators
- 3.2. Drivers, Restraints, Opportunities and Trends
- 3.3. Impact of COVID-19
4. Competition Landscape
- 4.1. Business Strategies Adopted by Key Players
- 4.2. Consolidated SWOT Analysis of Key Players
- 4.3. Global Resist Processing Equipment Market Key Players Market Share/Ranking, 2026
5. Global Resist Processing Equipment Market Size Estimates and Forecasts, By Segments, 2021-2034
- 5.1. Key Findings
- 5.2. By Mode of Operation (USD Billion)
- 5.2.1. Manual
- 5.2.2. Automatic
- 5.3. By Equipment Type (USD Billion)
- 5.3.1. Photoresist Coating Equipment
- 5.3.2. Photoresist Developed/Printer
- 5.3.3. Photoresist Steppers
- 5.3.4. Others (Cleaning Equipment, etc.)
- 5.4. By Application (USD Billion)
- 5.4.1. Micro Electromechanical System
- 5.4.2. Printed Circuit Board
- 5.4.3. Others (Silicon Wafers, etc.)
- 5.5. By End User (USD Billion)
- 5.5.1. Semiconductor and Microelectronics
- 5.5.2. Photonics
- 5.5.3. Nanotechnology
- 5.5.4. Others (Lithography, etc.)
- 5.6. By Region (USD Billion)
- 5.6.1. North America
- 5.6.2. Europe
- 5.6.3. Asia Pacific
- 5.6.4. Middle East & Africa
- 5.6.5. South America
6. North America Resist Processing Equipment Market Size Estimates and Forecasts, By Segments, 2021-2034
- 6.1. Key Findings
- 6.2. By Mode of Operation (USD Billion)
- 6.2.1. Manual
- 6.2.2. Automatic
- 6.3. By Equipment Type (USD Billion)
- 6.3.1. Photoresist Coating Equipment
- 6.3.2. Photoresist Developed/Printer
- 6.3.3. Photoresist Steppers
- 6.3.4. Others (Cleaning Equipment, etc.)
- 6.4. By Application (USD Billion)
- 6.4.1. Micro Electromechanical System
- 6.4.2. Printed Circuit Board
- 6.4.3. Others (Silicon Wafers, etc.)
- 6.5. By End User (USD Billion)
- 6.5.1. Semiconductor and Microelectronics
- 6.5.2. Photonics
- 6.5.3. Nanotechnology
- 6.5.4. Others (Lithography, etc.)
- 6.6. By Country (USD Billion)
- 6.6.1. U.S.
- 6.6.1.1. By Equipment Type
- 6.6.1.1.1. Photoresist Coating Equipment
- 6.6.1.1.2. Photoresist Developed/Printer
- 6.6.1.1.3. Photoresist Steppers
- 6.6.1.1.4. Others (Cleaning Equipment, etc.)
- 6.6.2. Canada
- 6.6.2.1. By Equipment Type
- 6.6.2.1.1. Photoresist Coating Equipment
- 6.6.2.1.2. Photoresist Developed/Printer
- 6.6.2.1.3. Photoresist Steppers
- 6.6.2.1.4. Others (Cleaning Equipment, etc.)
- 6.6.3. Mexico
- 6.6.3.1. By Equipment Type
- 6.6.3.1.1. Photoresist Coating Equipment
- 6.6.3.1.2. Photoresist Developed/Printer
- 6.6.3.1.3. Photoresist Steppers
- 6.6.3.1.4. Others (Cleaning Equipment, etc.)
7. Europe Resist Processing Equipment Market Size Estimates and Forecasts, By Segments, 2021-2034
- 7.1. Key Findings
- 7.2. By Mode of Operation (USD Billion)
- 7.2.1. Manual
- 7.2.2. Automatic
- 7.3. By Equipment Type (USD Billion)
- 7.3.1. Photoresist Coating Equipment
- 7.3.2. Photoresist Developed/Printer
- 7.3.3. Photoresist Steppers
- 7.3.4. Others (Cleaning Equipment, etc.)
- 7.4. By Application (USD Billion)
- 7.4.1. Micro Electromechanical System
- 7.4.2. Printed Circuit Board
- 7.4.3. Others (Silicon Wafers, etc.)
- 7.5. By End User (USD Billion)
- 7.5.1. Semiconductor and Microelectronics
- 7.5.2. Photonics
- 7.5.3. Nanotechnology
- 7.5.4. Others (Lithography, etc.)
- 7.6. By Country (USD Billion)
- 7.6.1. Germany
- 7.6.1.1. By Equipment Type
- 7.6.1.1.1. Photoresist Coating Equipment
- 7.6.1.1.2. Photoresist Developed/Printer
- 7.6.1.1.3. Photoresist Steppers
- 7.6.1.1.4. Others (Cleaning Equipment, etc.)
- 7.6.2. U.K.
- 7.6.2.1. By Equipment Type
- 7.6.2.1.1. Photoresist Coating Equipment
- 7.6.2.1.2. Photoresist Developed/Printer
- 7.6.2.1.3. Photoresist Steppers
- 7.6.2.1.4. Others (Cleaning Equipment, etc.)
- 7.6.3. France
- 7.6.3.1. By Equipment Type
- 7.6.3.1.1. Photoresist Coating Equipment
- 7.6.3.1.2. Photoresist Developed/Printer
- 7.6.3.1.3. Photoresist Steppers
- 7.6.3.1.4. Others (Cleaning Equipment, etc.)
- 7.6.4. Italy
- 7.6.4.1. By Equipment Type
- 7.6.4.1.1. Photoresist Coating Equipment
- 7.6.4.1.2. Photoresist Developed/Printer
- 7.6.4.1.3. Photoresist Steppers
- 7.6.4.1.4. Others (Cleaning Equipment, etc.)
- 7.6.5. Spain
- 7.6.5.1. By Equipment Type
- 7.6.5.1.1. Photoresist Coating Equipment
- 7.6.5.1.2. Photoresist Developed/Printer
- 7.6.5.1.3. Photoresist Steppers
- 7.6.5.1.4. Others (Cleaning Equipment, etc.)
- 7.6.6. Nordics
- 7.6.6.1. By Equipment Type
- 7.6.6.1.1. Photoresist Coating Equipment
- 7.6.6.1.2. Photoresist Developed/Printer
- 7.6.6.1.3. Photoresist Steppers
- 7.6.6.1.4. Others (Cleaning Equipment, etc.)
- 7.6.7. Benelux
- 7.6.7.1. By Equipment Type
- 7.6.7.1.1. Photoresist Coating Equipment
- 7.6.7.1.2. Photoresist Developed/Printer
- 7.6.7.1.3. Photoresist Steppers
- 7.6.7.1.4. Others (Cleaning Equipment, etc.)
- 7.6.8. Rest of Europe
8. Asia Pacific Resist Processing Equipment Market Size Estimates and Forecasts, By Segments, 2021-2034
- 8.1. Key Findings
- 8.2. By Mode of Operation (USD Billion)
- 8.2.1. Manual
- 8.2.2. Automatic
- 8.3. By Equipment Type (USD Billion)
- 8.3.1. Photoresist Coating Equipment
- 8.3.2. Photoresist Developed/Printer
- 8.3.3. Photoresist Steppers
- 8.3.4. Others (Cleaning Equipment, etc.)
- 8.4. By Application (USD Billion)
- 8.4.1. Micro Electromechanical System
- 8.4.2. Printed Circuit Board
- 8.4.3. Others (Silicon Wafers, etc.)
- 8.5. By End User (USD Billion)
- 8.5.1. Semiconductor and Microelectronics
- 8.5.2. Photonics
- 8.5.3. Nanotechnology
- 8.5.4. Others (Lithography, etc.)
- 8.6. By Country (USD Billion)
- 8.6.1. China
- 8.6.1.1. By Equipment Type
- 8.6.1.1.1. Photoresist Coating Equipment
- 8.6.1.1.2. Photoresist Developed/Printer
- 8.6.1.1.3. Photoresist Steppers
- 8.6.1.1.4. Others (Cleaning Equipment, etc.)
- 8.6.2. Japan
- 8.6.2.1. By Equipment Type
- 8.6.2.1.1. Photoresist Coating Equipment
- 8.6.2.1.2. Photoresist Developed/Printer
- 8.6.2.1.3. Photoresist Steppers
- 8.6.2.1.4. Others (Cleaning Equipment, etc.)
- 8.6.3. India
- 8.6.3.1. By Equipment Type
- 8.6.3.1.1. Photoresist Coating Equipment
- 8.6.3.1.2. Photoresist Developed/Printer
- 8.6.3.1.3. Photoresist Steppers
- 8.6.3.1.4. Others (Cleaning Equipment, etc.)
- 8.6.4. South Korea
- 8.6.4.1. By Equipment Type
- 8.6.4.1.1. Photoresist Coating Equipment
- 8.6.4.1.2. Photoresist Developed/Printer
- 8.6.4.1.3. Photoresist Steppers
- 8.6.4.1.4. Others (Cleaning Equipment, etc.)
- 8.6.5. Southeast Asia
- 8.6.5.1. By Equipment Type
- 8.6.5.1.1. Photoresist Coating Equipment
- 8.6.5.1.2. Photoresist Developed/Printer
- 8.6.5.1.3. Photoresist Steppers
- 8.6.5.1.4. Others (Cleaning Equipment, etc.)
- 8.6.6. Rest of Asia Pacific
9. Middle East & Africa Resist Processing Equipment Market Size Estimates and Forecasts, By Segments, 2021-2034
- 9.1. Key Findings
- 9.2. By Mode of Operation (USD Billion)
- 9.2.1. Manual
- 9.2.2. Automatic
- 9.3. By Equipment Type (USD Billion)
- 9.3.1. Photoresist Coating Equipment
- 9.3.2. Photoresist Developed/Printer
- 9.3.3. Photoresist Steppers
- 9.3.4. Others (Cleaning Equipment, etc.)
- 9.4. By Application (USD Billion)
- 9.4.1. Micro Electromechanical System
- 9.4.2. Printed Circuit Board
- 9.4.3. Others (Silicon Wafers, etc.)
- 9.5. By End User (USD Billion)
- 9.5.1. Semiconductor and Microelectronics
- 9.5.2. Photonics
- 9.5.3. Nanotechnology
- 9.5.4. Others (Lithography, etc.)
- 9.6. By Country (USD Billion)
- 9.6.1. GCC
- 9.6.1.1. By Equipment Type
- 9.6.1.1.1. Photoresist Coating Equipment
- 9.6.1.1.2. Photoresist Developed/Printer
- 9.6.1.1.3. Photoresist Steppers
- 9.6.1.1.4. Others (Cleaning Equipment, etc.)
- 9.6.2. South Africa
- 9.6.2.1. By Equipment Type
- 9.6.2.1.1. Photoresist Coating Equipment
- 9.6.2.1.2. Photoresist Developed/Printer
- 9.6.2.1.3. Photoresist Steppers
- 9.6.2.1.4. Others (Cleaning Equipment, etc.)
- 9.6.3. Rest of Middle East & Africa
10. South America Resist Processing Equipment Market Size Estimates and Forecasts, By Segments, 2021-2034
- 10.1. Key Findings
- 10.2. By Mode of Operation (USD Billion)
- 10.2.1. Manual
- 10.2.2. Automatic
- 10.3. By Equipment Type (USD Billion)
- 10.3.1. Photoresist Coating Equipment
- 10.3.2. Photoresist Developed/Printer
- 10.3.3. Photoresist Steppers
- 10.3.4. Others (Cleaning Equipment, etc.)
- 10.4. By Application (USD Billion)
- 10.4.1. Micro Electromechanical System
- 10.4.2. Printed Circuit Board
- 10.4.3. Others (Silicon Wafers, etc.)
- 10.5. By End User (USD Billion)
- 10.5.1. Semiconductor and Microelectronics
- 10.5.2. Photonics
- 10.5.3. Nanotechnology
- 10.5.4. Others (Lithography, etc.)
- 10.6. By Country (USD Billion)
- 10.6.1. Brazil
- 10.6.1.1. By Equipment Type
- 10.6.1.1.1. Photoresist Coating Equipment
- 10.6.1.1.2. Photoresist Developed/Printer
- 10.6.1.1.3. Photoresist Steppers
- 10.6.1.1.4. Others (Cleaning Equipment, etc.)
- 10.6.2. Argentina
- 10.6.2.1. By Equipment Type
- 10.6.2.1.1. Photoresist Coating Equipment
- 10.6.2.1.2. Photoresist Developed/Printer
- 10.6.2.1.3. Photoresist Steppers
- 10.6.2.1.4. Others (Cleaning Equipment, etc.)
- 10.6.3. Rest of South America
11. Company Profiles for Top 10 Players (Based on data availability in public domain and/or on paid databases)
- 11.1. ASML Holding N.V.
- 11.1.1. Overview
- 11.1.1.1. Key Management
- 11.1.1.2. Headquarters
- 11.1.1.3. Offerings/Business Segments
- 11.1.2. Key Details (Key details are consolidated data and not product/service specific)
- 11.1.2.1. Employee Size
- 11.1.2.2. Past and Current Revenue
- 11.1.2.3. Geographical Share
- 11.1.2.4. Business Segment Share
- 11.1.2.5. Recent Developments
- 11.2. Fujifilm Holdings Corporation
- 11.2.1. Overview
- 11.2.1.1. Key Management
- 11.2.1.2. Headquarters
- 11.2.1.3. Offerings/Business Segments
- 11.2.2. Key Details (Key details are consolidated data and not product/service specific)
- 11.2.2.1. Employee Size
- 11.2.2.2. Past and Current Revenue
- 11.2.2.3. Geographical Share
- 11.2.2.4. Business Segment Share
- 11.2.2.5. Recent Developments
- 11.3. JEOL Ltd
- 11.3.1. Overview
- 11.3.1.1. Key Management
- 11.3.1.2. Headquarters
- 11.3.1.3. Offerings/Business Segments
- 11.3.2. Key Details (Key details are consolidated data and not product/service specific)
- 11.3.2.1. Employee Size
- 11.3.2.2. Past and Current Revenue
- 11.3.2.3. Geographical Share
- 11.3.2.4. Business Segment Share
- 11.3.2.5. Recent Developments
- 11.4. KLA Corporation
- 11.4.1. Overview
- 11.4.1.1. Key Management
- 11.4.1.2. Headquarters
- 11.4.1.3. Offerings/Business Segments
- 11.4.2. Key Details (Key details are consolidated data and not product/service specific)
- 11.4.2.1. Employee Size
- 11.4.2.2. Past and Current Revenue
- 11.4.2.3. Geographical Share
- 11.4.2.4. Business Segment Share
- 11.4.2.5. Recent Developments
- 11.5. Lam Research Corporation
- 11.5.1. Overview
- 11.5.1.1. Key Management
- 11.5.1.2. Headquarters
- 11.5.1.3. Offerings/Business Segments
- 11.5.2. Key Details (Key details are consolidated data and not product/service specific)
- 11.5.2.1. Employee Size
- 11.5.2.2. Past and Current Revenue
- 11.5.2.3. Geographical Share
- 11.5.2.4. Business Segment Share
- 11.5.2.5. Recent Developments
- 11.6. Nikon Corporation
- 11.6.1. Overview
- 11.6.1.1. Key Management
- 11.6.1.2. Headquarters
- 11.6.1.3. Offerings/Business Segments
- 11.6.2. Key Details (Key details are consolidated data and not product/service specific)
- 11.6.2.1. Employee Size
- 11.6.2.2. Past and Current Revenue
- 11.6.2.3. Geographical Share
- 11.6.2.4. Business Segment Share
- 11.6.2.5. Recent Developments
- 11.7. Obducat AB (Publ)
- 11.7.1. Overview
- 11.7.1.1. Key Management
- 11.7.1.2. Headquarters
- 11.7.1.3. Offerings/Business Segments
- 11.7.2. Key Details (Key details are consolidated data and not product/service specific)
- 11.7.2.1. Employee Size
- 11.7.2.2. Past and Current Revenue
- 11.7.2.3. Geographical Share
- 11.7.2.4. Business Segment Share
- 11.7.2.5. Recent Developments
- 11.8. Screen Semiconductor Solutions Co Ltd
- 11.8.1. Overview
- 11.8.1.1. Key Management
- 11.8.1.2. Headquarters
- 11.8.1.3. Offerings/Business Segments
- 11.8.2. Key Details (Key details are consolidated data and not product/service specific)
- 11.8.2.1. Employee Size
- 11.8.2.2. Past and Current Revenue
- 11.8.2.3. Geographical Share
- 11.8.2.4. Business Segment Share
- 11.8.2.5. Recent Developments
- 11.9. SUSS Micro Tec SE
- 11.9.1. Overview
- 11.9.1.1. Key Management
- 11.9.1.2. Headquarters
- 11.9.1.3. Offerings/Business Segments
- 11.9.2. Key Details (Key details are consolidated data and not product/service specific)
- 11.9.2.1. Employee Size
- 11.9.2.2. Past and Current Revenue
- 11.9.2.3. Geographical Share
- 11.9.2.4. Business Segment Share
- 11.9.2.5. Recent Developments
- 11.10. Tokyo Electron Limited
- 11.10.1. Overview
- 11.10.1.1. Key Management
- 11.10.1.2. Headquarters
- 11.10.1.3. Offerings/Business Segments
- 11.10.2. Key Details (Key details are consolidated data and not product/service specific)
- 11.10.2.1. Employee Size
- 11.10.2.2. Past and Current Revenue
- 11.10.2.3. Geographical Share
- 11.10.2.4. Business Segment Share
- 11.10.2.5. Recent Developments