Table of Contents
Part 1 Market Overview
    1.1 Market Definition
    1.2 Market Development
        1.2.1 Current Situation
        1.2.2 Aspects of COVID-19 Impact
    1.3 By Type
                Table Type of Mobile Offshore Drilling Unit (MODU)
                Figure Global Mobile Offshore Drilling Unit (MODU) Market Share by Type in 2019
    1.4 By Application
                Table Application of Mobile Offshore Drilling Unit (MODU)
                Figure Global Mobile Offshore Drilling Unit (MODU) Market Share by Application in 2019
    1.5 By Region
                Figure Global Mobile Offshore Drilling Unit (MODU) Market Share by Region in 2019
                Figure Asia Mobile Offshore Drilling Unit (MODU) Market Share by Region in 2019
Part 2 Key Companies
    2.1 Keppel
        2.1.1 Company Profile
                Table Keppel Overview List
        2.1.2 Products & Services Overview
        2.1.3 Sales Data List
                Table Mobile Offshore Drilling Unit (MODU) Business Operation of Keppel (Sales Revenue, Sales Volume, Price, Cost, Gross Margin)
    2.2 Sembcorp Marine
    2.3 DSME
    2.4 SHI
    2.5 HHI
    2.6 CIMC Raffles
    2.7 CSIC Dalian
    2.8 COSCO
    2.9 CMHI
Part 3 Global Market Status and Future Forecast
    3.1 Global Market by Region
                Table Global Mobile Offshore Drilling Unit (MODU) Market by Region, 2015-2019 (Million USD)
                Figure Global Mobile Offshore Drilling Unit (MODU) Market Share by Region in 2019 (Million USD)
                Table Global Mobile Offshore Drilling Unit (MODU) Market by Region, 2015-2019 (Volume)
                Figure Global Mobile Offshore Drilling Unit (MODU) Market Share by Region in 2019 (Volume)
                Table Price List by Region, 2015-2019
    3.2 Global Market by Company
                Table Global Mobile Offshore Drilling Unit (MODU) Market by Company, 2015-2019 (Million USD)
                Figure Global Mobile Offshore Drilling Unit (MODU) Market Share by Company in 2019 (Million USD)
                Table Global Mobile Offshore Drilling Unit (MODU) Market by Company, 2015-2019 (Volume)
                Figure Global Mobile Offshore Drilling Unit (MODU) Market Share by Company in 2019 (Volume)
                Table Price List by Company, 2015-2019
    3.3 Global Market by Type
                Table Global Mobile Offshore Drilling Unit (MODU) Market by Type, 2015-2019 (Million USD)
                Figure Global Mobile Offshore Drilling Unit (MODU) Market Share by Type in 2019 (Million USD)
                Table Global Mobile Offshore Drilling Unit (MODU) Market by Type, 2015-2019 (Volume)
                Figure Global Mobile Offshore Drilling Unit (MODU) Market Share by Type in 2019 (Volume)
                Table Price List by Type, 2015-2019
    3.4 Global Market by Application
                Table Global Mobile Offshore Drilling Unit (MODU) Market by Application, 2015-2019 (Million USD)
                Figure Global Mobile Offshore Drilling Unit (MODU) Market Share by Application in 2019 (Million USD)
                Table Global Mobile Offshore Drilling Unit (MODU) Market by Application, 2015-2019 (Volume)
                Figure Global Mobile Offshore Drilling Unit (MODU) Market Share by Application in 2019 (Volume)
                Table Price List by Application, 2015-2019
    3.5 Global Market by Forecast
                Figure Global Mobile Offshore Drilling Unit (MODU) Market Forecast, 2020-2025 (Million USD)
                Figure Global Mobile Offshore Drilling Unit (MODU) Market Forecast, 2020-2025 (Volume)
Part 4 Asia-Pacific Market Status and Future Forecast
    4.1 Asia-Pacific Market by Type
                Table Asia-Pacific Mobile Offshore Drilling Unit (MODU) Market by Type, 2015-2019 (Million USD)
                Figure Asia-Pacific Mobile Offshore Drilling Unit (MODU) Market Share by Type in 2019 (Million USD)
                Table Asia-Pacific Mobile Offshore Drilling Unit (MODU) Market by Type, 2015-2019 (Volume)
                Figure Asia-Pacific Mobile Offshore Drilling Unit (MODU) Market Share by Type in 2019 (Volume)
                Table Price List by Type, 2015-2019
    4.2 Asia-Pacific Market by Application
                Table Asia-Pacific Mobile Offshore Drilling Unit (MODU) Market by Application, 2015-2019 (Million USD)
                Figure Asia-Pacific Mobile Offshore Drilling Unit (MODU) Market Share by Application in 2019 (Million USD)
                Table Asia-Pacific Mobile Offshore Drilling Unit (MODU) Market by Application, 2015-2019 (Volume)
                Figure Asia-Pacific Mobile Offshore Drilling Unit (MODU) Market Share by Application in 2019 (Volume)
                Table Price List by Application, 2015-2019
    4.3 Asia-Pacific Market by Geography
        4.3.1 China Market Status and Future Forecast
                Figure China Mobile Offshore Drilling Unit (MODU) Market Market Status, 2015-2019  (Million USD)
                Figure China Mobile Offshore Drilling Unit (MODU) Market Market Status, 2015-2019  (Volume)
                Figure China Mobile Offshore Drilling Unit (MODU) Market Forecast, 2020-2025 (Million USD)
                Figure China Mobile Offshore Drilling Unit (MODU) Market Forecast, 2020-2025 (Volume)
        4.3.2 Southeast Asia Market Status and Future Forecast
                Figure Southeast Asia Mobile Offshore Drilling Unit (MODU) Market Market Status, 2015-2019  (Million USD)
                Figure Southeast Asia Mobile Offshore Drilling Unit (MODU) Market Market Status, 2015-2019  (Volume)
                Figure Southeast Asia Mobile Offshore Drilling Unit (MODU) Market Forecast, 2020-2025 (Million USD)
                Figure Southeast Asia Mobile Offshore Drilling Unit (MODU) Market Forecast, 2020-2025 (Volume)
        4.3.3 India Market Status and Future Forecast
                Figure India Mobile Offshore Drilling Unit (MODU) Market Market Status, 2015-2019  (Million USD)
                Figure India Mobile Offshore Drilling Unit (MODU) Market Market Status, 2015-2019  (Volume)
                Figure India Mobile Offshore Drilling Unit (MODU) Market Forecast, 2020-2025 (Million USD)
                Figure India Mobile Offshore Drilling Unit (MODU) Market Forecast, 2020-2025 (Volume)
        4.3.4 Japan Market Status and Future Forecast
                Figure Japan Mobile Offshore Drilling Unit (MODU) Market Market Status, 2015-2019  (Million USD)
                Figure Japan Mobile Offshore Drilling Unit (MODU) Market Market Status, 2015-2019  (Volume)
                Figure Japan Mobile Offshore Drilling Unit (MODU) Market Forecast, 2020-2025 (Million USD)
                Figure Japan Mobile Offshore Drilling Unit (MODU) Market Forecast, 2020-2025 (Volume)
        4.3.5 Korea Market Status and Future Forecast
                Figure Korea Mobile Offshore Drilling Unit (MODU) Market Market Status, 2015-2019  (Million USD)
                Figure Korea Mobile Offshore Drilling Unit (MODU) Market Market Status, 2015-2019  (Volume)
                Figure Korea Mobile Offshore Drilling Unit (MODU) Market Forecast, 2020-2025 (Million USD)
                Figure Korea Mobile Offshore Drilling Unit (MODU) Market Forecast, 2020-2025 (Volume)
        4.3.6 Oceania Market Status and Future Forecast
                Figure Oceania Mobile Offshore Drilling Unit (MODU) Market Market Status, 2015-2019  (Million USD)
                Figure Oceania Mobile Offshore Drilling Unit (MODU) Market Market Status, 2015-2019  (Volume)
                Figure Oceania Mobile Offshore Drilling Unit (MODU) Market Forecast, 2020-2025 (Million USD)
                Figure Oceania Mobile Offshore Drilling Unit (MODU) Market Forecast, 2020-2025 (Volume)
    4.4 Asia-Pacific Market by Forecast
                Figure Asia-Pacific Mobile Offshore Drilling Unit (MODU) Market Forecast, 2020-2025 (Million USD)
                Figure Asia-Pacific Mobile Offshore Drilling Unit (MODU) Market Forecast, 2020-2025 (Volume)
Part 5 Europe Market Status and Future Forecast
    5.1 Europe Market by Type
                Table Europe Mobile Offshore Drilling Unit (MODU) Market by Type, 2015-2019 (Million USD)
                Figure Europe Mobile Offshore Drilling Unit (MODU) Market Share by Type in 2019 (Million USD)
                Table Europe Mobile Offshore Drilling Unit (MODU) Market by Type, 2015-2019 (Volume)
                Figure Europe Mobile Offshore Drilling Unit (MODU) Market Share by Type in 2019 (Volume)
                Table Price List by Type, 2015-2019
    5.2 Europe Market by Application
                Table Europe Mobile Offshore Drilling Unit (MODU) Market by Application, 2015-2019 (Million USD)
                Figure Europe Mobile Offshore Drilling Unit (MODU) Market Share by Application in 2019 (Million USD)
                Table Europe Mobile Offshore Drilling Unit (MODU) Market by Application, 2015-2019 (Volume)
                Figure Europe Mobile Offshore Drilling Unit (MODU) Market Share by Application in 2019 (Volume)
                Table Price List by Application, 2015-2019
    5.3 Europe Market by Geography
        5.3.1 Germany Market Status and Future Forecast
                Figure Germany Mobile Offshore Drilling Unit (MODU) Market Market Status, 2015-2019  (Million USD)
                Figure Germany Mobile Offshore Drilling Unit (MODU) Market Market Status, 2015-2019  (Volume)
                Figure Germany Mobile Offshore Drilling Unit (MODU) Market Forecast, 2020-2025 (Million USD)
                Figure Germany Mobile Offshore Drilling Unit (MODU) Market Forecast, 2020-2025 (Volume)
        5.3.2 UK Market Status and Future Forecast
                Figure UK Mobile Offshore Drilling Unit (MODU) Market Market Status, 2015-2019  (Million USD)
                Figure UK Mobile Offshore Drilling Unit (MODU) Market Market Status, 2015-2019  (Volume)
                Figure UK Mobile Offshore Drilling Unit (MODU) Market Forecast, 2020-2025 (Million USD)
                Figure UK Mobile Offshore Drilling Unit (MODU) Market Forecast, 2020-2025 (Volume)
        5.3.3 France Market Status and Future Forecast
                Figure France Mobile Offshore Drilling Unit (MODU) Market Market Status, 2015-2019  (Million USD)
                Figure France Mobile Offshore Drilling Unit (MODU) Market Market Status, 2015-2019  (Volume)
                Figure France Mobile Offshore Drilling Unit (MODU) Market Forecast, 2020-2025 (Million USD)
                Figure France Mobile Offshore Drilling Unit (MODU) Market Forecast, 2020-2025 (Volume)
        5.3.4 Italy Market Status and Future Forecast
                Figure Italy Mobile Offshore Drilling Unit (MODU) Market Market Status, 2015-2019  (Million USD)
                Figure Italy Mobile Offshore Drilling Unit (MODU) Market Market Status, 2015-2019  (Volume)
                Figure Italy Mobile Offshore Drilling Unit (MODU) Market Forecast, 2020-2025 (Million USD)
                Figure Italy Mobile Offshore Drilling Unit (MODU) Market Forecast, 2020-2025 (Volume)
        5.3.5 Russia Market Status and Future Forecast
                Figure Russia Mobile Offshore Drilling Unit (MODU) Market Market Status, 2015-2019  (Million USD)
                Figure Russia Mobile Offshore Drilling Unit (MODU) Market Market Status, 2015-2019  (Volume)
                Figure Russia Mobile Offshore Drilling Unit (MODU) Market Forecast, 2020-2025 (Million USD)
                Figure Russia Mobile Offshore Drilling Unit (MODU) Market Forecast, 2020-2025 (Volume)
        5.3.6 Spain Market Status and Future Forecast
                Figure Spain Mobile Offshore Drilling Unit (MODU) Market Market Status, 2015-2019  (Million USD)
                Figure Spain Mobile Offshore Drilling Unit (MODU) Market Market Status, 2015-2019  (Volume)
                Figure Spain Mobile Offshore Drilling Unit (MODU) Market Forecast, 2020-2025 (Million USD)
                Figure Spain Mobile Offshore Drilling Unit (MODU) Market Forecast, 2020-2025 (Volume)
        5.3.6 Netherlands Market Status and Future Forecast
                Figure Netherlands Mobile Offshore Drilling Unit (MODU) Market Market Status, 2015-2019  (Million USD)
                Figure Netherlands Mobile Offshore Drilling Unit (MODU) Market Market Status, 2015-2019  (Volume)
                Figure Netherlands Mobile Offshore Drilling Unit (MODU) Market Forecast, 2020-2025 (Million USD)
                Figure Netherlands Mobile Offshore Drilling Unit (MODU) Market Forecast, 2020-2025 (Volume)
        5.3.7 Turkey Market Status and Future Forecast
                Figure Turkey Mobile Offshore Drilling Unit (MODU) Market Market Status, 2015-2019  (Million USD)
                Figure Turkey Mobile Offshore Drilling Unit (MODU) Market Market Status, 2015-2019  (Volume)
                Figure Turkey Mobile Offshore Drilling Unit (MODU) Market Forecast, 2020-2025 (Million USD)
                Figure Turkey Mobile Offshore Drilling Unit (MODU) Market Forecast, 2020-2025 (Volume)
        5.3.6 Switzerland Market Status and Future Forecast
                Figure Switzerland Mobile Offshore Drilling Unit (MODU) Market Market Status, 2015-2019  (Million USD)
                Figure Switzerland Mobile Offshore Drilling Unit (MODU) Market Market Status, 2015-2019  (Volume)
                Figure Switzerland Mobile Offshore Drilling Unit (MODU) Market Forecast, 2020-2025 (Million USD)
                Figure Switzerland Mobile Offshore Drilling Unit (MODU) Market Forecast, 2020-2025 (Volume)
    5.4 Europe Market by Forecast
                Figure Europe Mobile Offshore Drilling Unit (MODU) Market Forecast, 2020-2025 (Million USD)
                Figure Europe Mobile Offshore Drilling Unit (MODU) Market Forecast, 2020-2025 (Volume)
Part 6 North America Market Status and Future Forecast
    6.1 North America Market by Type
                Table North America Mobile Offshore Drilling Unit (MODU) Market by Type, 2015-2019 (Million USD)
                Figure North America Mobile Offshore Drilling Unit (MODU) Market Share by Type in 2019 (Million USD)
                Table North America Mobile Offshore Drilling Unit (MODU) Market by Type, 2015-2019 (Volume)
                Figure North America Mobile Offshore Drilling Unit (MODU) Market Share by Type in 2019 (Volume)
                Table Price List by Type, 2015-2019
    6.2 North America Market by Application
                Table North America Mobile Offshore Drilling Unit (MODU) Market by Application, 2015-2019 (Million USD)
                Figure North America Mobile Offshore Drilling Unit (MODU) Market Share by Application in 2019 (Million USD)
                Table North America Mobile Offshore Drilling Unit (MODU) Market by Application, 2015-2019 (Volume)
                Figure North America Mobile Offshore Drilling Unit (MODU) Market Share by Application in 2019 (Volume)
                Table Price List by Application, 2015-2019
    6.3 North America Market by Geography
        6.3.1 United States Market Status and Future Forecast
                Figure United States Mobile Offshore Drilling Unit (MODU) Market Market Status, 2015-2019  (Million USD)
                Figure United States Mobile Offshore Drilling Unit (MODU) Market Market Status, 2015-2019  (Volume)
                Figure United States Mobile Offshore Drilling Unit (MODU) Market Forecast, 2020-2025 (Million USD)
                Figure United States Mobile Offshore Drilling Unit (MODU) Market Forecast, 2020-2025 (Volume)
        6.3.2 Canada Market Status and Future Forecast
                Figure Canada Mobile Offshore Drilling Unit (MODU) Market Market Status, 2015-2019  (Million USD)
                Figure Canada Mobile Offshore Drilling Unit (MODU) Market Market Status, 2015-2019  (Volume)
                Figure Canada Mobile Offshore Drilling Unit (MODU) Market Forecast, 2020-2025 (Million USD)
                Figure Canada Mobile Offshore Drilling Unit (MODU) Market Forecast, 2020-2025 (Volume)
        6.3.3 Mexico Market Status and Future Forecast
                Figure Mexico Mobile Offshore Drilling Unit (MODU) Market Market Status, 2015-2019  (Million USD)
                Figure Mexico Mobile Offshore Drilling Unit (MODU) Market Market Status, 2015-2019  (Volume)
                Figure Mexico Mobile Offshore Drilling Unit (MODU) Market Forecast, 2020-2025 (Million USD)
                Figure Mexico Mobile Offshore Drilling Unit (MODU) Market Forecast, 2020-2025 (Volume)
    6.4 North America Market by Forecast
                Figure North America Mobile Offshore Drilling Unit (MODU) Market Forecast, 2020-2025 (Million USD)
                Figure North America Mobile Offshore Drilling Unit (MODU) Market Forecast, 2020-2025 (Volume)
Part 7 South America Market Status and Future Forecast
    7.1 South America Market by Type
                Table South America Mobile Offshore Drilling Unit (MODU) Market by Type, 2015-2019 (Million USD)
                Figure South America Mobile Offshore Drilling Unit (MODU) Market Share by Type in 2019 (Million USD)
                Table South America Mobile Offshore Drilling Unit (MODU) Market by Type, 2015-2019 (Volume)
                Figure South America Mobile Offshore Drilling Unit (MODU) Market Share by Type in 2019 (Volume)
                Table Price List by Type, 2015-2019
    7.2 South America Market by Application
                Table South America Mobile Offshore Drilling Unit (MODU) Market by Application, 2015-2019 (Million USD)
                Figure South America Mobile Offshore Drilling Unit (MODU) Market Share by Application in 2019 (Million USD)
                Table South America Mobile Offshore Drilling Unit (MODU) Market by Application, 2015-2019 (Volume)
                Figure South America Mobile Offshore Drilling Unit (MODU) Market Share by Application in 2019 (Volume)
                Table Price List by Application, 2015-2019
    7.3 South America Market by Geography
        7.3.1 Brazil Market Status and Future Forecast
                Figure Brazil Mobile Offshore Drilling Unit (MODU) Market Market Status, 2015-2019  (Million USD)
                Figure Brazil Mobile Offshore Drilling Unit (MODU) Market Market Status, 2015-2019  (Volume)
                Figure Brazil Mobile Offshore Drilling Unit (MODU) Market Forecast, 2020-2025 (Million USD)
                Figure Brazil Mobile Offshore Drilling Unit (MODU) Market Forecast, 2020-2025 (Volume)
        7.3.2 Argentina Market Status and Future Forecast
                Figure Argentina Mobile Offshore Drilling Unit (MODU) Market Market Status, 2015-2019  (Million USD)
                Figure Argentina Mobile Offshore Drilling Unit (MODU) Market Market Status, 2015-2019  (Volume)
                Figure Argentina Mobile Offshore Drilling Unit (MODU) Market Forecast, 2020-2025 (Million USD)
                Figure Argentina Mobile Offshore Drilling Unit (MODU) Market Forecast, 2020-2025 (Volume)
        7.3.3 Columbia Market Status and Future Forecast
                Figure Columbia Mobile Offshore Drilling Unit (MODU) Market Market Status, 2015-2019  (Million USD)
                Figure Columbia Mobile Offshore Drilling Unit (MODU) Market Market Status, 2015-2019  (Volume)
                Figure Columbia Mobile Offshore Drilling Unit (MODU) Market Forecast, 2020-2025 (Million USD)
                Figure Columbia Mobile Offshore Drilling Unit (MODU) Market Forecast, 2020-2025 (Volume)
        7.3.4 Chile Market Status and Future Forecast
                Figure Chile Mobile Offshore Drilling Unit (MODU) Market Market Status, 2015-2019  (Million USD)
                Figure Chile Mobile Offshore Drilling Unit (MODU) Market Market Status, 2015-2019  (Volume)
                Figure Chile Mobile Offshore Drilling Unit (MODU) Market Forecast, 2020-2025 (Million USD)
                Figure Chile Mobile Offshore Drilling Unit (MODU) Market Forecast, 2020-2025 (Volume)
        7.3.5 Peru Market Status and Future Forecast
                Figure Peru Mobile Offshore Drilling Unit (MODU) Market Market Status, 2015-2019  (Million USD)
                Figure Peru Mobile Offshore Drilling Unit (MODU) Market Market Status, 2015-2019  (Volume)
                Figure Peru Mobile Offshore Drilling Unit (MODU) Market Forecast, 2020-2025 (Million USD)
                Figure Peru Mobile Offshore Drilling Unit (MODU) Market Forecast, 2020-2025 (Volume)
    7.4 South America Market by Forecast
                Figure South America Mobile Offshore Drilling Unit (MODU) Market Forecast, 2020-2025 (Million USD)
                Figure South America Mobile Offshore Drilling Unit (MODU) Market Forecast, 2020-2025 (Volume)
Part 8 Middle East & Africa Market Status and Future Forecast
    8.1 Middle East & Africa Market by Type
                Table Middle East & Africa Mobile Offshore Drilling Unit (MODU) Market by Type, 2015-2019 (Million USD)
                Figure Middle East & Africa Mobile Offshore Drilling Unit (MODU) Market Share by Type in 2019 (Million USD)
                Table Middle East & Africa Mobile Offshore Drilling Unit (MODU) Market by Type, 2015-2019 (Volume)
                Figure Middle East & Africa Mobile Offshore Drilling Unit (MODU) Market Share by Type in 2019 (Volume)
                Table Price List by Type, 2015-2019
    8.2 Middle East & Africa Market by Application
                Table Middle East & Africa Mobile Offshore Drilling Unit (MODU) Market by Application, 2015-2019 (Million USD)
                Figure Middle East & Africa Mobile Offshore Drilling Unit (MODU) Market Share by Application in 2019 (Million USD)
                Table Middle East & Africa Mobile Offshore Drilling Unit (MODU) Market by Application, 2015-2019 (Volume)
                Figure Middle East & Africa Mobile Offshore Drilling Unit (MODU) Market Share by Application in 2019 (Volume)
                Table Price List by Application, 2015-2019
    8.3 Middle East & Africa Market by Geography
        8.3.1 GCC Market Status and Future Forecast
                Figure GCC Mobile Offshore Drilling Unit (MODU) Market Market Status, 2015-2019  (Million USD)
                Figure GCC Mobile Offshore Drilling Unit (MODU) Market Market Status, 2015-2019  (Volume)
                Figure GCC Mobile Offshore Drilling Unit (MODU) Market Forecast, 2020-2025 (Million USD)
                Figure GCC Mobile Offshore Drilling Unit (MODU) Market Forecast, 2020-2025 (Volume)
        8.3.2 North Africa Market Status and Future Forecast
                Figure North Africa Mobile Offshore Drilling Unit (MODU) Market Market Status, 2015-2019  (Million USD)
                Figure North Africa Mobile Offshore Drilling Unit (MODU) Market Market Status, 2015-2019  (Volume)
                Figure North Africa Mobile Offshore Drilling Unit (MODU) Market Forecast, 2020-2025 (Million USD)
                Figure North Africa Mobile Offshore Drilling Unit (MODU) Market Forecast, 2020-2025 (Volume)
        8.3.3 South Africa Market Status and Future Forecast
                Figure South Africa Mobile Offshore Drilling Unit (MODU) Market Market Status, 2015-2019  (Million USD)
                Figure South Africa Mobile Offshore Drilling Unit (MODU) Market Market Status, 2015-2019  (Volume)
                Figure South Africa Mobile Offshore Drilling Unit (MODU) Market Forecast, 2020-2025 (Million USD)
                Figure South Africa Mobile Offshore Drilling Unit (MODU) Market Forecast, 2020-2025 (Volume)
    8.4 Middle East & Africa Market by Forecast
                Figure Middle East & Africa Mobile Offshore Drilling Unit (MODU) Market Forecast, 2020-2025 (Million USD)
                Figure Middle East & Africa Mobile Offshore Drilling Unit (MODU) Market Forecast, 2020-2025 (Volume)
Part 9 Market Features
    9.1 Product Features
    9.2 Price Features
    9.3 Channel Features
    9.4 Purchasing Features
Part 10 Investment Opportunity
    10.1 Regional Investment Opportunity
    10.2 Industry Investment Opportunity
PART 11 Coronavirus Impact
    11.1 Impact on Industry Upstream
    11.2 Impact on Industry Downstream
    11.3 Impact on Industry Channels
    11.4 Impact on Industry Competition
    11.5 Impact on Industry Obtain Employment
Part 12 Conclusion