Gallium Nitride Power Semiconductor Device Market Research: Global Status & Forecast by Geography, Type & Application (2015-2025)

Table of Content

1 Industrial Chain Overview

• 1.1 Gallium Nitride Power Semiconductor Device Industry
  • 1.1.1 Overview
  • 1.1.2 Characteristics of Gallium Nitride Power Semiconductor Device
• 1.2 Upstream
  • 1.2.1 Major Materials
  • 1.2.2 Manufacturing Overview
• 1.3 Product List By Type
  • 1.3.1 2 Inch
  • 1.3.2 4 Inch
  • 1.3.3 6-Inch and Above
• 1.4 End-Use List
  • 1.4.1 Demand in Telecommunication
  • 1.4.2 Demand in Industrial
  • 1.4.3 Demand in Automotive
  • 1.4.4 Demand in Renewable
  • 1.4.5 Demand in Consumer and Enterprise
  • 1.4.6 Demand in Military, Defense, and Aerospace
  • 1.4.7 Demand in Medical
• 1.5 Global Market Overview
  • 1.5.1 Global Market Size and Forecast, 2015-2025
  • 1.5.2 Global Market Size and Forecast by Geography with CAGR, 2015-2025
  • 1.5.3 Global Market Size and Forecast by Product Type with CAGR, 2015-2025
  • 1.5.4 Global Market Size and Forecast by End-Use with CAGR, 2015-2025

2 Global Production & Consumption by Geography

• 2.1 Global Production & Consumption
  • 2.1.1 Global Production
  • 2.1.2 Global Consumption
• 2.2 Geographic Production & Consumption
  • 2.2.1 Production
    • 2.2.1.1 Asia-Pacific
    • 2.2.1.2 North America
    • 2.2.1.3 South America
    • 2.2.1.4 Europe
    • 2.2.1.5 Middle East & Africa
  • 2.2.2 Consumption
    • 2.2.2.1 Asia-Pacific
    • 2.2.2.2 North America
    • 2.2.2.3 South America
    • 2.2.2.4 Europe
    • 2.2.2.5 Middle East & Africa

  3 Major Manufacturers Introduction

  • 3.1 Manufacturers Overview
  • 3.2 Manufacturers List
    • 3.2.1 Cree (US) Overview
      • 3.2.1.1 Product Specifications
      • 3.2.1.2 Business Data (Production Volume (Volume), Production Amount (Million USD), Price, Cost, Margin)
      • 3.2.1.3 Recent Developments
      • 3.2.1.4 Future Strategic Planning
    • 3.2.2 Samsung (South Korea) Overview
      • 3.2.2.1 Product Specifications
      • 3.2.2.2 Business Data (Production Volume (Volume), Production Amount (Million USD), Price, Cost, Margin)
      • 3.2.2.3 Recent Developments
      • 3.2.2.4 Future Strategic Planning
    • 3.2.3 Infineon (Germany) Overview
      • 3.2.3.1 Product Specifications
      • 3.2.3.2 Business Data (Production Volume (Volume), Production Amount (Million USD), Price, Cost, Margin)
      • 3.2.3.3 Recent Developments
      • 3.2.3.4 Future Strategic Planning
    • 3.2.4 Qorvo (US) Overview
      • 3.2.4.1 Product Specifications
      • 3.2.4.2 Business Data (Production Volume (Volume), Production Amount (Million USD), Price, Cost, Margin)
      • 3.2.4.3 Recent Developments
      • 3.2.4.4 Future Strategic Planning
    • 3.2.5 MACOM (US) Overview
      • 3.2.5.1 Product Specifications
      • 3.2.5.2 Business Data (Production Volume (Volume), Production Amount (Million USD), Price, Cost, Margin)
      • 3.2.5.3 Recent Developments
      • 3.2.5.4 Future Strategic Planning
    • 3.2.6 Microsemi Corporation (US) Overview
      • 3.2.6.1 Product Specifications
      • 3.2.6.2 Business Data (Production Volume (Volume), Production Amount (Million USD), Price, Cost, Margin)
      • 3.2.6.3 Recent Developments
      • 3.2.6.4 Future Strategic Planning
    • 3.2.7 Analog Devices (US) Overview
      • 3.2.7.1 Product Specifications
      • 3.2.7.2 Business Data (Production Volume (Volume), Production Amount (Million USD), Price, Cost, Margin)
      • 3.2.7.3 Recent Developments
      • 3.2.7.4 Future Strategic Planning
    • 3.2.8 Mitsubishi Electric (Japan) Overview
      • 3.2.8.1 Product Specifications
      • 3.2.8.2 Business Data (Production Volume (Volume), Production Amount (Million USD), Price, Cost, Margin)
      • 3.2.8.3 Recent Developments
      • 3.2.8.4 Future Strategic Planning
    • 3.2.9 Efficient Power Conversion (US) Overview
      • 3.2.9.1 Product Specifications
      • 3.2.9.2 Business Data (Production Volume (Volume), Production Amount (Million USD), Price, Cost, Margin)
      • 3.2.9.3 Recent Developments
      • 3.2.9.4 Future Strategic Planning
    • 3.2.10 GaN Systems (Canada) Overview
      • 3.2.10.1 Product Specifications
      • 3.2.10.2 Business Data (Production Volume (Volume), Production Amount (Million USD), Price, Cost, Margin)
      • 3.2.10.3 Recent Developments
      • 3.2.10.4 Future Strategic Planning
    • 3.2.11 Exagan (France) Overview
      • 3.2.11.1 Product Specifications
      • 3.2.11.2 Business Data (Production Volume (Volume), Production Amount (Million USD), Price, Cost, Margin)
      • 3.2.11.3 Recent Developments
      • 3.2.11.4 Future Strategic Planning
    • 3.2.12 VisIC Technologies (Israel) Overview
      • 3.2.12.1 Product Specifications
      • 3.2.12.2 Business Data (Production Volume (Volume), Production Amount (Million USD), Price, Cost, Margin)
      • 3.2.12.3 Recent Developments
      • 3.2.12.4 Future Strategic Planning
    • 3.2.13 Integra Technologies (US) Overview
      • 3.2.13.1 Product Specifications
      • 3.2.13.2 Business Data (Production Volume (Volume), Production Amount (Million USD), Price, Cost, Margin)
      • 3.2.13.3 Recent Developments
      • 3.2.13.4 Future Strategic Planning
    • 3.2.14 Transphorm (US) Overview
      • 3.2.14.1 Product Specifications
      • 3.2.14.2 Business Data (Production Volume (Volume), Production Amount (Million USD), Price, Cost, Margin)
      • 3.2.14.3 Recent Developments
      • 3.2.14.4 Future Strategic Planning
    • 3.2.15 Navitas Semiconductor (US) Overview
      • 3.2.15.1 Product Specifications
      • 3.2.15.2 Business Data (Production Volume (Volume), Production Amount (Million USD), Price, Cost, Margin)
      • 3.2.15.3 Recent Developments
      • 3.2.15.4 Future Strategic Planning
    • 3.2.16 Nichia (Japan) Overview
      • 3.2.16.1 Product Specifications
      • 3.2.16.2 Business Data (Production Volume (Volume), Production Amount (Million USD), Price, Cost, Margin)
      • 3.2.16.3 Recent Developments
      • 3.2.16.4 Future Strategic Planning
    • 3.2.17 Panasonic (Japan) Overview
      • 3.2.17.1 Product Specifications
      • 3.2.17.2 Business Data (Production Volume (Volume), Production Amount (Million USD), Price, Cost, Margin)
      • 3.2.17.3 Recent Developments
      • 3.2.17.4 Future Strategic Planning
    • 3.2.18 Texas Instruments (US) Overview
      • 3.2.18.1 Product Specifications
      • 3.2.18.2 Business Data (Production Volume (Volume), Production Amount (Million USD), Price, Cost, Margin)
      • 3.2.18.3 Recent Developments
      • 3.2.18.4 Future Strategic Planning
    • 3.2.19 Ampleon (Netherlands) Overview
      • 3.2.19.1 Product Specifications
      • 3.2.19.2 Business Data (Production Volume (Volume), Production Amount (Million USD), Price, Cost, Margin)
      • 3.2.19.3 Recent Developments
      • 3.2.19.4 Future Strategic Planning
    • 3.2.20 Sumitomo Electric (Japan) Overview
      • 3.2.20.1 Product Specifications
      • 3.2.20.2 Business Data (Production Volume (Volume), Production Amount (Million USD), Price, Cost, Margin)
      • 3.2.20.3 Recent Developments
      • 3.2.20.4 Future Strategic Planning
    • 3.2.21 Northrop Grumman Corporation (US) Overview
      • 3.2.21.1 Product Specifications
      • 3.2.21.2 Business Data (Production Volume (Volume), Production Amount (Million USD), Price, Cost, Margin)
      • 3.2.21.3 Recent Developments
      • 3.2.21.4 Future Strategic Planning
    • 3.2.22 Dialog Semiconductor (UK) Overview
      • 3.2.22.1 Product Specifications
      • 3.2.22.2 Business Data (Production Volume (Volume), Production Amount (Million USD), Price, Cost, Margin)
      • 3.2.22.3 Recent Developments
      • 3.2.22.4 Future Strategic Planning
    • 3.2.23 Epistar (Taiwan) Overview
      • 3.2.23.1 Product Specifications
      • 3.2.23.2 Business Data (Production Volume (Volume), Production Amount (Million USD), Price, Cost, Margin)
      • 3.2.23.3 Recent Developments
      • 3.2.23.4 Future Strategic Planning

    4 Market Competition Pattern

    • 4.1 Market Size and Sketch
    • 4.2 Company Market Share
      • 4.2.1 Global Production by Major Manufacturers
      • 4.2.2 Market Concentration Analysis
    • 4.3 Market News and Trend
      • 4.3.1 Merger & Acquisition
      • 4.3.2 New Product Launch

    5 Product Type Segment

    • 5.1 Global Overview by Product Type Segment
    • 5.2 Segment Subdivision by Product Type
      • 5.2.1 Market in 2 Inch
        • 5.2.1.1 Market Size
        • 5.2.1.2 Situation & Development
      • 5.2.2 Market in 4 Inch
        • 5.2.2.1 Market Size
        • 5.2.2.2 Situation & Development
      • 5.2.3 Market in 6-Inch and Above
        • 5.2.3.1 Market Size
        • 5.2.3.2 Situation & Development

      6 End-Use Segment

      • 6.1 Global Overview by End-Use Segment
      • 6.2 Segment Subdivision
        • 6.2.1 Market in Telecommunication
          • 6.2.1.1 Market Size
          • 6.2.1.2 Situation & Development
        • 6.2.2 Market in Industrial
          • 6.2.2.1 Market Size
          • 6.2.2.2 Situation & Development
        • 6.2.3 Market in Automotive
          • 6.2.3.1 Market Size
          • 6.2.3.2 Situation & Development
        • 6.2.4 Market in Renewable
          • 6.2.4.1 Market Size
          • 6.2.4.2 Situation & Development
        • 6.2.5 Market in Consumer and Enterprise
          • 6.2.5.1 Market Size
          • 6.2.5.2 Situation & Development
        • 6.2.6 Market in Military, Defense, and Aerospace
          • 6.2.6.1 Market Size
          • 6.2.6.2 Situation & Development
        • 6.2.7 Market in Medical
          • 6.2.7.1 Market Size
          • 6.2.7.2 Situation & Development

        7 Market Forecast & Trend

        • 7.1 Regional Forecast
        • 7.2 Consumption Forecast
          • 7.2.1 Product Type Forecast
          • 7.2.2 End-Use Forecast
        • 7.3 Investment Trend
        • 7.4 Consumption Trend

        8 Price & Channel

        • 8.1 Price and Cost
          • 8.1.1 Price
          • 8.1.2 Cost
        • 8.2 Channel Segment

        9 Market Drivers & Investment Environment

        • 9.1 Market Drivers
        • 9.2 Investment Environment

        10 Research Conclusion

        List of Tables

        Table Global Market Size and Forecast by Geography with Growth Rate, 2015-2025

        Table Global Market Size and Forecast by Type with Growth Rate, 2015-2025

        Table Global Market Size and Forecast by End-Use with Growth Rate, 2015-2025

        Table Global Production Volume Status and Growth Rate by Geography, 2015-2018, in Volume

        Table Global Production Amount Status and Growth Rate by Geography, 2015-2018, in Million USD

        Table Global Market Volume and Growth Rate by Geography, 2015-2018, in Volume

        Table Global Market Amount and Growth Rate by Geography, 2015-2018, in Million USD

        Table Asia-Pacific Production Volume Status and Growth Rate by Region, 2015-2018, in Volume

        Table Asia-Pacific Production Amount Status and Growth Rate by Region, 2015-2018, in Million USD

        Table North America Production Volume Status and Growth Rate by Region, 2015-2018, in Volume

        Table North America Production Amount Status and Growth Rate by Region, 2015-2018, in Million USD

        Table South America Production Volume Status and Growth Rate by Region, 2015-2018, in Volume

        Table South America Production Amount Status and Growth Rate by Region, 2015-2018, in Million USD

        Table Europe Production Volume Status and Growth Rate by Region, 2015-2018, in Volume

        Table Europe Production Amount Status and Growth Rate by Region, 2015-2018, in Million USD

        Table Middle East & Africa Production Volume Status and Growth Rate by Region, 2015-2018, in Volume

        Table Middle East & Africa Production Amount Status and Growth Rate by Region, 2015-2018, in Million USD

        Table Asia-Pacific Market Volume and Growth Rate by Region, 2015-2018, in Volume

        Table Asia-Pacific Market Amount and Growth Rate by Region, 2015-2018, in Million USD

        Table North America Market Volume and Growth Rate by Region, 2015-2018, in Volume

        Table North America Market Amount and Growth Rate by Region, 2015-2018, in Million USD

        Table Europe Market Volume and Growth Rate by Region, 2015-2018, in Volume

        Table South America Market Amount and Growth Rate by Region, 2015-2018, in Million USD

        Table Europe Market Volume and Growth Rate by Region, 2015-2018, in Volume

        Table Europe Market Amount and Growth Rate by Region, 2015-2018, in Million USD

        Table Middle East & Africa Market Volume and Growth Rate by Region, 2015-2018, in Volume

        Table Middle East & Africa Market Amount and Growth Rate by Region, 2015-2018, in Million USD

        Table Major Manufacturers Headquarters and Contact Information

        Table Major Manufacturers Capacity List in 2018

        Table Cree (US) Overview List

        Table Gallium Nitride Power Semiconductor Device Business Operation of Cree (US) (Production Volume (Volume), Production Amount (Million USD), Price, Cost, Gross Margin)

        Table Samsung (South Korea) Overview List

        Table Gallium Nitride Power Semiconductor Device Business Operation of Samsung (South Korea) (Production Volume (Volume), Production Amount (Million USD), Price, Cost, Gross Margin)

        Table Infineon (Germany) Overview List

        Table Gallium Nitride Power Semiconductor Device Business Operation of Infineon (Germany) (Production Volume (Volume), Production Amount (Million USD), Price, Cost, Gross Margin)

        Table Qorvo (US) Overview List

        Table Gallium Nitride Power Semiconductor Device Business Operation of Qorvo (US) (Production Volume (Volume), Production Amount (Million USD), Price, Cost, Gross Margin)

        Table MACOM (US) Overview List

        Table Gallium Nitride Power Semiconductor Device Business Operation of MACOM (US) (Production Volume (Volume), Production Amount (Million USD), Price, Cost, Gross Margin)

        Table Microsemi Corporation (US) Overview List

        Table Gallium Nitride Power Semiconductor Device Business Operation of Microsemi Corporation (US) (Production Volume (Volume), Production Amount (Million USD), Price, Cost, Gross Margin)

        Table Analog Devices (US) Overview List

        Table Gallium Nitride Power Semiconductor Device Business Operation of Analog Devices (US) (Production Volume (Volume), Production Amount (Million USD), Price, Cost, Gross Margin)

        Table Mitsubishi Electric (Japan) Overview List

        Table Gallium Nitride Power Semiconductor Device Business Operation of Mitsubishi Electric (Japan) (Production Volume (Volume), Production Amount (Million USD), Price, Cost, Gross Margin)

        Table Efficient Power Conversion (US) Overview List

        Table Gallium Nitride Power Semiconductor Device Business Operation of Efficient Power Conversion (US) (Production Volume (Volume), Production Amount (Million USD), Price, Cost, Gross Margin)

        Table GaN Systems (Canada) Overview List

        Table Gallium Nitride Power Semiconductor Device Business Operation of GaN Systems (Canada) (Production Volume (Volume), Production Amount (Million USD), Price, Cost, Gross Margin)

        Table Exagan (France) Overview List

        Table Gallium Nitride Power Semiconductor Device Business Operation of Exagan (France) (Production Volume (Volume), Production Amount (Million USD), Price, Cost, Gross Margin)

        Table VisIC Technologies (Israel) Overview List

        Table Gallium Nitride Power Semiconductor Device Business Operation of VisIC Technologies (Israel) (Production Volume (Volume), Production Amount (Million USD), Price, Cost, Gross Margin)

        Table Integra Technologies (US) Overview List

        Table Gallium Nitride Power Semiconductor Device Business Operation of Integra Technologies (US) (Production Volume (Volume), Production Amount (Million USD), Price, Cost, Gross Margin)

        Table Transphorm (US) Overview List

        Table Gallium Nitride Power Semiconductor Device Business Operation of Transphorm (US) (Production Volume (Volume), Production Amount (Million USD), Price, Cost, Gross Margin)

        Table Navitas Semiconductor (US) Overview List

        Table Gallium Nitride Power Semiconductor Device Business Operation of Navitas Semiconductor (US) (Production Volume (Volume), Production Amount (Million USD), Price, Cost, Gross Margin)

        Table Nichia (Japan) Overview List

        Table Gallium Nitride Power Semiconductor Device Business Operation of Nichia (Japan) (Production Volume (Volume), Production Amount (Million USD), Price, Cost, Gross Margin)

        Table Panasonic (Japan) Overview List

        Table Gallium Nitride Power Semiconductor Device Business Operation of Panasonic (Japan) (Production Volume (Volume), Production Amount (Million USD), Price, Cost, Gross Margin)

        Table Texas Instruments (US) Overview List

        Table Gallium Nitride Power Semiconductor Device Business Operation of Texas Instruments (US) (Production Volume (Volume), Production Amount (Million USD), Price, Cost, Gross Margin)

        Table Ampleon (Netherlands) Overview List

        Table Gallium Nitride Power Semiconductor Device Business Operation of Ampleon (Netherlands) (Production Volume (Volume), Production Amount (Million USD), Price, Cost, Gross Margin)

        Table Sumitomo Electric (Japan) Overview List

        Table Gallium Nitride Power Semiconductor Device Business Operation of Sumitomo Electric (Japan) (Production Volume (Volume), Production Amount (Million USD), Price, Cost, Gross Margin)

        Table Northrop Grumman Corporation (US) Overview List

        Table Gallium Nitride Power Semiconductor Device Business Operation of Northrop Grumman Corporation (US) (Production Volume (Volume), Production Amount (Million USD), Price, Cost, Gross Margin)

        Table Dialog Semiconductor (UK) Overview List

        Table Gallium Nitride Power Semiconductor Device Business Operation of Dialog Semiconductor (UK) (Production Volume (Volume), Production Amount (Million USD), Price, Cost, Gross Margin)

        Table Epistar (Taiwan) Overview List

        Table Gallium Nitride Power Semiconductor Device Business Operation of Epistar (Taiwan) (Production Volume (Volume), Production Amount (Million USD), Price, Cost, Gross Margin)

        Table Global Production Volume List by Manufacturers, 2015-2018, in Volume

        Table Global Production Volume Share List by Manufacturers, 2015-2018, in Volume

        Table Global Production Amount List by Manufacturers, 2015-2018, in Million USD

        Table Global Production Amount Share List by Manufacturers, 2015-2018, in Million USD

        Table Global Market Status and Growth Rate by Product Type Segment, 2015-2018, in Million USD

        Table Global Market Status and Growth Rate by Product Type Segment 2015-2018, in Volume

        Table Global Market Status and Growth Rate by End-Use Segment, 2015-2018, in Million USD

        Table Global Market Status and Growth Rate by End-Use Segment 2015-2018, in Volume

        Table Global Market Forecast by Region Segment 2019-2025, in Million USD

        Table Global Market Forecast by Region Segment 2019-2025, in Volume

        Table Global Market Amount by Product Type Segment 2019-2025, in Million USD

        Table Global Market Volume by Product Type Segment 2019-2025, in Volume

        Table Global Market Amount by End-Use Segment 2019-2025, in Million USD

        Table Global Market Volume by End-Use Segment 2019-2025, in Volume

        List of Figures

        Figure Gallium Nitride Power Semiconductor Device Picture List

        Figure Global Market Size and Forecast with Growth Rate, 2015-2025

        Figure Global Production Volume Status and Growth Rate, 2015-2018, in Volume

        Figure Global Production Amount Status and Growth Rate, 2015-2018, in Million USD

        Figure Global Market Volume and Growth Rate, 2015-2018, in Volume

        Figure Global Market Amount and Growth Rate, 2015-2018, in Million USD

        Figure Asia-Pacific Production Volume Status and Growth Rate, 2015-2018, in Volume

        Figure Asia-Pacific Production Amount Status and Growth Rate, 2015-2018, in Million USD

        Figure North America Production Volume Status and Growth Rate, 2015-2018, in Volume

        Figure North America Production Amount Status and Growth Rate, 2015-2018, in Million USD

        Figure South America Production Volume Status and Growth Rate, 2015-2018, in Volume

        Figure South America Production Amount Status and Growth Rate, 2015-2018, in Million USD

        Figure Europe Production Volume Status and Growth Rate, 2015-2018, in Volume

        Figure Europe Production Amount Status and Growth Rate, 2015-2018, in Million USD

        Figure Middle East & Africa Production Volume Status and Growth Rate, 2015-2018, in Volume

        Figure Middle East & Africa Production Amount Status and Growth Rate, 2015-2018, in Million USD

        Figure Asia-Pacific Market Volume and Growth Rate, 2015-2018, in Volume

        Figure Asia-Pacific Market Amount and Growth Rate, 2015-2018, in Million USD

        Figure North America Market Volume and Growth Rate, 2015-2018, in Volume

        Figure North America Market Amount and Growth Rate, 2015-2018, in Million USD

        Figure Europe Market Volume and Growth Rate, 2015-2018, in Volume

        Figure South America Market Amount and Growth Rate, 2015-2018, in Million USD

        Figure Europe Market Volume and Growth Rate, 2015-2018, in Volume

        Figure Europe Market Amount and Growth Rate, 2015-2018, in Million USD

        Figure Middle East & Africa Market Volume and Growth Rate, 2015-2018, in Volume

        Figure Middle East & Africa Market Amount and Growth Rate, 2015-2018, in Million USD

        Figure Global Production Volume Share by Manufacturers in 2019, in Volume

        Figure Global Production Amount Share by Manufacturers in 2019, in Million USD

        Figure Global Market Amount and Growth Rate in 2 Inch, 2015-2018, in USD Million

        Figure Global Market Amount and Growth Rate in 2 Inch, 2015-2018, in Volume

        Figure Global Market Amount and Growth Rate in 4 Inch, 2015-2018, in USD Million

        Figure Global Market Amount and Growth Rate in 4 Inch, 2015-2018, in Volume

        Figure Global Market Amount and Growth Rate in 6-Inch and Above, 2015-2018, in USD Million

        Figure Global Market Amount and Growth Rate in 6-Inch and Above, 2015-2018, in Volume

        Figure Global Market Amount and Growth Rate in Telecommunication, 2015-2018, in USD Million

        Figure Global Market Amount and Growth Rate in Telecommunication, 2015-2018, in Volume

        Figure Global Market Amount and Growth Rate in Industrial, 2015-2018, in USD Million

        Figure Global Market Amount and Growth Rate in Industrial, 2015-2018, in Volume

        Figure Global Market Amount and Growth Rate in Automotive, 2015-2018, in USD Million

        Figure Global Market Amount and Growth Rate in Automotive, 2015-2018, in Volume

        Figure Global Market Amount and Growth Rate in Renewable, 2015-2018, in USD Million

        Figure Global Market Amount and Growth Rate in Renewable, 2015-2018, in Volume

        Figure Global Market Amount and Growth Rate in Consumer and Enterprise, 2015-2018, in USD Million

        Figure Global Market Amount and Growth Rate in Consumer and Enterprise, 2015-2018, in Volume

        Figure Global Market Amount and Growth Rate in Military, Defense, and Aerospace, 2015-2018, in USD Million

        Figure Global Market Amount and Growth Rate in Military, Defense, and Aerospace, 2015-2018, in Volume

        Figure Global Market Amount and Growth Rate in Medical, 2015-2018, in USD Million

        Figure Global Market Amount and Growth Rate in Medical, 2015-2018, in Volume