Table of Contents 1 Report Overview 1.1 Research Scope 1.2 Major Manufacturers Covered in This Report 1.3 Market Segment by Type 1.3.1 Global Triethyleneglycol Divinyl Ether Market Size Growth Rate by Type (2019-2025) 1.3.2 98% Purity 1.3.3 99% Purity 1.4 Market Segment by Application 1.4.1 Global Triethyleneglycol Divinyl Ether Market Share by Application (2019-2025) 1.4.2 Photocuring Thinner 1.4.3 Lubricant 1.5 Study Objectives 1.6 Years Considered 2 Global Growth Trends 2.1 Production and Capacity Analysis 2.1.1 Global Triethyleneglycol Divinyl Ether Production Value 2014-2025 2.1.2 Global Triethyleneglycol Divinyl Ether Production 2014-2025 2.1.3 Global Triethyleneglycol Divinyl Ether Capacity 2014-2025 2.1.4 Global Triethyleneglycol Divinyl Ether Marketing Pricing and Trends 2.2 Key Producers Growth Rate (CAGR) 2019-2025 2.2.1 Global Triethyleneglycol Divinyl Ether Market Size CAGR of Key Regions 2.2.2 Global Triethyleneglycol Divinyl Ether Market Share of Key Regions 2.3 Industry Trends 2.3.1 Market Top Trends 2.3.2 Market Drivers 3 Market Share by Manufacturers 3.1 Capacity and Production by Manufacturers 3.1.1 Global Triethyleneglycol Divinyl Ether Capacity by Manufacturers 3.1.2 Global Triethyleneglycol Divinyl Ether Production by Manufacturers 3.2 Revenue by Manufacturers 3.2.1 Triethyleneglycol Divinyl Ether Revenue by Manufacturers (2014-2019) 3.2.2 Triethyleneglycol Divinyl Ether Revenue Share by Manufacturers (2014-2019) 3.2.3 Global Triethyleneglycol Divinyl Ether Market Concentration Ratio (CR5 and HHI) 3.3 Triethyleneglycol Divinyl Ether Price by Manufacturers 3.4 Key Manufacturers Triethyleneglycol Divinyl Ether Plants/Factories Distribution and Area Served 3.5 Date of Key Manufacturers Enter into Triethyleneglycol Divinyl Ether Market 3.6 Key Manufacturers Triethyleneglycol Divinyl Ether Product Offered 3.7 Mergers & Acquisitions, Expansion Plans 4 Market Size by Type 4.1 Production and Production Value for Each Type 4.1.1 98% Purity Production and Production Value (2014-2019) 4.1.2 99% Purity Production and Production Value (2014-2019) 4.2 Global Triethyleneglycol Divinyl Ether Production Market Share by Type 4.3 Global Triethyleneglycol Divinyl Ether Production Value Market Share by Type 4.4 Triethyleneglycol Divinyl Ether Ex-factory Price by Type 5 Market Size by Application 5.1 Overview 5.2 Global Triethyleneglycol Divinyl Ether Consumption by Application 6 Production by Regions 6.1 Global Triethyleneglycol Divinyl Ether Production (History Data) by Regions 2014-2019 6.2 Global Triethyleneglycol Divinyl Ether Production Value (History Data) by Regions 6.3 United States 6.3.1 United States Triethyleneglycol Divinyl Ether Production Growth Rate 2014-2019 6.3.2 United States Triethyleneglycol Divinyl Ether Production Value Growth Rate 2014-2019 6.3.3 Key Players in United States 6.3.4 United States Triethyleneglycol Divinyl Ether Import & Export 6.4 European Union 6.4.1 European Union Triethyleneglycol Divinyl Ether Production Growth Rate 2014-2019 6.4.2 European Union Triethyleneglycol Divinyl Ether Production Value Growth Rate 2014-2019 6.4.3 Key Players in European Union 6.4.4 European Union Triethyleneglycol Divinyl Ether Import & Export 6.5 China 6.5.1 China Triethyleneglycol Divinyl Ether Production Growth Rate 2014-2019 6.5.2 China Triethyleneglycol Divinyl Ether Production Value Growth Rate 2014-2019 6.5.3 Key Players in China 6.5.4 China Triethyleneglycol Divinyl Ether Import & Export 6.6 Rest of World 6.6.1 Japan 6.6.2 Korea 6.6.3 India 6.6.4 Southeast Asia 7 Triethyleneglycol Divinyl Ether Consumption by Regions 7.1 Global Triethyleneglycol Divinyl Ether Consumption (History Data) by Regions 7.2 United States 7.2.1 United States Triethyleneglycol Divinyl Ether Consumption by Type 7.2.2 United States Triethyleneglycol Divinyl Ether Consumption by Application 7.3 European Union 7.3.1 European Union Triethyleneglycol Divinyl Ether Consumption by Type 7.3.2 European Union Triethyleneglycol Divinyl Ether Consumption by Application 7.4 China 7.4.1 China Triethyleneglycol Divinyl Ether Consumption by Type 7.4.2 China Triethyleneglycol Divinyl Ether Consumption by Application 7.5 Rest of World 7.5.1 Rest of World Triethyleneglycol Divinyl Ether Consumption by Type 7.5.2 Rest of World Triethyleneglycol Divinyl Ether Consumption by Application 7.5.1 Japan 7.5.2 Korea 7.5.3 India 7.5.4 Southeast Asia 8 Company Profiles 8.1 BASF 8.1.1 BASF Company Details 8.1.2 Company Description and Business Overview 8.1.3 Production and Revenue of Triethyleneglycol Divinyl Ether 8.1.4 Triethyleneglycol Divinyl Ether Product Introduction 8.1.5 BASF Recent Development 8.2 Chongqin Happy 8.2.1 Chongqin Happy Company Details 8.2.2 Company Description and Business Overview 8.2.3 Production and Revenue of Triethyleneglycol Divinyl Ether 8.2.4 Triethyleneglycol Divinyl Ether Product Introduction 8.2.5 Chongqin Happy Recent Development 8.3 Hubei Xinjing New Material 8.3.1 Hubei Xinjing New Material Company Details 8.3.2 Company Description and Business Overview 8.3.3 Production and Revenue of Triethyleneglycol Divinyl Ether 8.3.4 Triethyleneglycol Divinyl Ether Product Introduction 8.3.5 Hubei Xinjing New Material Recent Development 8.4 Nanwei Chemical 8.4.1 Nanwei Chemical Company Details 8.4.2 Company Description and Business Overview 8.4.3 Production and Revenue of Triethyleneglycol Divinyl Ether 8.4.4 Triethyleneglycol Divinyl Ether Product Introduction 8.4.5 Nanwei Chemical Recent Development 9 Market Forecast 9.1 Global Market Size Forecast 9.1.1 Global Triethyleneglycol Divinyl Ether Capacity, Production Forecast 2019-2025 9.1.2 Global Triethyleneglycol Divinyl Ether Production Value Forecast 2019-2025 9.2 Market Forecast by Regions 9.2.1 Global Triethyleneglycol Divinyl Ether Production and Value Forecast by Regions 2019-2025 9.2.2 Global Triethyleneglycol Divinyl Ether Consumption Forecast by Regions 2019-2025 9.3 United States 9.3.1 Production and Value Forecast in United States 9.3.2 Consumption Forecast in United States 9.4 European Union 9.4.1 Production and Value Forecast in European Union 9.4.2 Consumption Forecast in European Union 9.5 China 9.5.1 Production and Value Forecast in China 9.5.2 Consumption Forecast in China 9.6 Rest of World 9.6.1 Japan 9.6.2 Korea 9.6.3 India 9.6.4 Southeast Asia 9.7 Forecast by Type 9.7.1 Global Triethyleneglycol Divinyl Ether Production Forecast by Type 9.7.2 Global Triethyleneglycol Divinyl Ether Production Value Forecast by Type 9.8 Consumption Forecast by Application 10 Value Chain and Sales Channels Analysis 10.1 Value Chain Analysis 10.2 Sales Channels Analysis 10.2.1 Triethyleneglycol Divinyl Ether Sales Channels 10.2.2 Triethyleneglycol Divinyl Ether Distributors 10.3 Triethyleneglycol Divinyl Ether Customers 11 Opportunities & Challenges, Threat and Affecting Factors 11.1 Market Opportunities 11.2 Market Challenges 11.3 Porter's Five Forces Analysis 12 Key Findings 13 Appendix 13.1 Research Methodology 13.1.1 Methodology/Research Approach 13.1.1.1 Research Programs/Design 13.1.1.2 Market Size Estimation 13.1.1.3 Market Breakdown and Data Triangulation 13.1.2 Data Source 13.1.2.1 Secondary Sources 13.1.2.2 Primary Sources 13.2 Author Details 13.3 Disclaimer

List of Tables and Figures Figure Triethyleneglycol Divinyl Ether Product Picture Table Triethyleneglycol Divinyl Ether Key Market Segments Table Major Manufacturers Triethyleneglycol Divinyl Ether Covered in This Report Table Global Triethyleneglycol Divinyl Ether Market Size Growth Rate by Type 2019-2025 (MT) & (Million US$) Figure Global Triethyleneglycol Divinyl Ether Sales Market Shar by Type 2014-2025 Figure 98% Purity Figures Table Major Manufacturers of 98% Purity Figure 99% Purity Figures Table Major Manufacturers of 99% Purity Table Global Triethyleneglycol Divinyl Ether Market Share by Application 2019-2025 (MT) Figure Photocuring Thinner Use Case Figure Lubricant Use Case Figure Triethyleneglycol Divinyl Ether Report Years Considered Figure Global Triethyleneglycol Divinyl Ether Production Value Growth Rate 2014-2025 (Million US$) Figure Global Triethyleneglycol Divinyl Ether Production 2014-2025 (MT) Figure Global Triethyleneglycol Divinyl Ether Capacity 2014-2025 (MT) Table Key Manufacturers Triethyleneglycol Divinyl Ether Capacity (MT) Figure Global Triethyleneglycol Divinyl Ether Price 2014-2025 (USD/MT) Table Global Triethyleneglycol Divinyl Ether Market Size of Key Regions (Million USD) & (MT) Table Global Triethyleneglycol Divinyl Ether Growth Rate of Key Regions 2019-2025 (Million USD) Table Global Triethyleneglycol Divinyl Ether Market Share for of Regions 2019-2025 (MT) Table Market Top Trends Table Global Triethyleneglycol Divinyl Ether Capacity by Manufacturers (2014-2019) (MT) Table Global Triethyleneglycol Divinyl Ether Capacity Market Share by Manufacturers (2014-2019) Table Global Triethyleneglycol Divinyl Ether Production by Manufacturers (2014-2019) (MT) Table Global Triethyleneglycol Divinyl Ether Production Share by Manufacturers (2014-2019) Figure Global Triethyleneglycol Divinyl Ether Production Share by Manufacturers in 2018 Table Triethyleneglycol Divinyl Ether Revenue by Manufacturers (2014-2019) (Million USD) Table Triethyleneglycol Divinyl Ether Revenue Share by Manufacturers (2014-2019) Figure Triethyleneglycol Divinyl Ether Value Share by Manufacturers in 2018 Table Global Triethyleneglycol Divinyl Ether Manufacturers Market Concentration Ratio (CR5 and HHI) Table Triethyleneglycol Divinyl Ether Price by Manufacturers 2014-2019 (USD/MT) Table Key Manufacturers Triethyleneglycol Divinyl Ether Plants/Factories Distribution Table Key Manufacturers Triethyleneglycol Divinyl Ether Area Served Table Date of Key Manufacturers Enter into Triethyleneglycol Divinyl Ether Market Table Key Manufacturers Triethyleneglycol Divinyl Ether Product Type Table Mergers & Acquisitions, Expansion Plans Table Global 98% Purity Production and Production Value (2014-2019) (MT) & (Million US$) Table Global 99% Purity Production and Production Value (2014-2019) (MT) & (Million US$) Table Global Triethyleneglycol Divinyl Ether Production by Type (2014-2019) (MT) Table Global Triethyleneglycol Divinyl Ether Production Share by Type (2014-2019) Figure Global Triethyleneglycol Divinyl Ether Production Market Share by Type (2014-2019) Figure Global Triethyleneglycol Divinyl Ether Production Market Share by Type in 2018 Table Global Triethyleneglycol Divinyl Ether Production Value by Type (2014-2019) (Million US$) Table Global Triethyleneglycol Divinyl Ether Production Value Share by Type (2014-2019) Figure Global Triethyleneglycol Divinyl Ether Production Value Market Share by Type (2014-2019) Figure Global Triethyleneglycol Divinyl Ether Production Value Market Share by Type in 2018 Table Triethyleneglycol Divinyl Ether Ex-factory Price by Type 2014-2019 (USD/MT) Table Global Triethyleneglycol Divinyl Ether Consumption by Application (2014-2019) (MT) Table Global Triethyleneglycol Divinyl Ether Consumption Share by Application (2014-2019) Figure Global Consumption Triethyleneglycol Divinyl Ether Market Share by Application (2014-2019) Table Global Triethyleneglycol Divinyl Ether Production by Regions 2014-2019 (MT) Table Global Triethyleneglycol Divinyl Ether Production Market Share by Regions 2014-2019 Figure Global Triethyleneglycol Divinyl Ether Production Market Share by Regions 2014-2019 Figure Global Triethyleneglycol Divinyl Ether Production Market Share by Regions in 2018 Table Global Triethyleneglycol Divinyl Ether Production Value by Regions 2014-2019 (Million USD) Table Global Triethyleneglycol Divinyl Ether Production Value Market Share by Regions 2014-2019 Figure Global Triethyleneglycol Divinyl Ether Production Value Market Share by Regions 2014-2019 Figure Global Triethyleneglycol Divinyl Ether Production Value Market Share by Regions in 2018 Table United States Triethyleneglycol Divinyl Ether Production and Value 2014-2019 (MT) & (Million USD) Figure United States Triethyleneglycol Divinyl Ether Production Growth Rate 2014-2019 (MT) Figure United States Triethyleneglycol Divinyl Ether Production Value Growth Rate 2014-2019 (Million USD) Table United States Triethyleneglycol Divinyl Ether Import & Export (MT) Table European Union Triethyleneglycol Divinyl Ether Production and Value 2014-2019 (MT) & (Million USD) Figure European Union Triethyleneglycol Divinyl Ether Production Growth Rate 2014-2019 (MT) Figure European Union Triethyleneglycol Divinyl Ether Production Value Growth Rate 2014-2019 (Million USD) Table European Union Triethyleneglycol Divinyl Ether Import & Export (MT) Table China Triethyleneglycol Divinyl Ether Production and Value 2014-2019 (MT) & (Million USD) Figure China Triethyleneglycol Divinyl Ether Production Growth Rate 2014-2019 (MT) Figure China Triethyleneglycol Divinyl Ether Production Value Growth Rate 2014-2019 (Million USD) Table China Triethyleneglycol Divinyl Ether Import & Export (MT) Figure Japan Triethyleneglycol Divinyl Ether Production Growth Rate 2014-2019 (MT) Figure Japan Triethyleneglycol Divinyl Ether Production Value Growth Rate 2014-2019 (Million USD) Figure Korea Triethyleneglycol Divinyl Ether Production Growth Rate 2014-2019 (MT) Figure Korea Triethyleneglycol Divinyl Ether Production Value Growth Rate 2014-2019 (Million USD) Figure India Triethyleneglycol Divinyl Ether Production Growth Rate 2014-2019 (MT) Figure India Triethyleneglycol Divinyl Ether Production Value Growth Rate 2014-2019 (Million USD) Figure Southeast Asia Triethyleneglycol Divinyl Ether Production Growth Rate 2014-2019 (MT) Figure Southeast Asia Triethyleneglycol Divinyl Ether Production Value Growth Rate 2014-2019 (Million USD) Table Global Triethyleneglycol Divinyl Ether Consumption by Regions 2014-2019 (MT) Table Global Triethyleneglycol Divinyl Ether Consumption Market Share by Regions 2014-2019 Figure Global Triethyleneglycol Divinyl Ether Consumption Market Share by Regions 2014-2019 Figure Global Triethyleneglycol Divinyl Ether Consumption Market Share by Regions in 2018 Figure United States Triethyleneglycol Divinyl Ether Consumption Growth Rate (2014-2019) (MT) Table United States Triethyleneglycol Divinyl Ether Consumption by Type (2014-2019) (MT) Figure United States Triethyleneglycol Divinyl Ether Consumption Market Share by Type in 2019 Table United States Triethyleneglycol Divinyl Ether Consumption by Application (2014-2019) (MT) Figure United States Triethyleneglycol Divinyl Ether Consumption Market Share by Application in 2019 Figure European Union Triethyleneglycol Divinyl Ether Consumption Growth Rate (2014-2019) (MT) Table European Union Triethyleneglycol Divinyl Ether Consumption by Type (2014-2019) (MT) Figure European Union Triethyleneglycol Divinyl Ether Consumption Market Share by Type in 2019 Table European Union Triethyleneglycol Divinyl Ether Consumption by Application (2014-2019) (MT) Figure European Union Triethyleneglycol Divinyl Ether Consumption Market Share by Application in 2019 Figure China Triethyleneglycol Divinyl Ether Consumption Growth Rate (2014-2019) (MT) Table China Triethyleneglycol Divinyl Ether Consumption by Type (2014-2019) (MT) Figure China Triethyleneglycol Divinyl Ether Consumption Market Share by Type in 2019 Table China Triethyleneglycol Divinyl Ether Consumption by Application (2014-2019) (MT) Figure China Triethyleneglycol Divinyl Ether Consumption Market Share by Application in 2019 Figure Rest of World Triethyleneglycol Divinyl Ether Consumption Growth Rate (2014-2019) (MT) Table Rest of World Triethyleneglycol Divinyl Ether Consumption by Type (2014-2019) (MT) Figure Rest of World Triethyleneglycol Divinyl Ether Consumption Market Share by Type in 2019 Table Rest of World Triethyleneglycol Divinyl Ether Consumption by Application (2014-2019) (MT) Figure Rest of World Triethyleneglycol Divinyl Ether Consumption Market Share by Application in 2019 Figure Japan Triethyleneglycol Divinyl Ether Consumption Growth Rate (2014-2019) (MT) Figure Korea Triethyleneglycol Divinyl Ether Consumption Growth Rate (2014-2019) (MT) Figure India Triethyleneglycol Divinyl Ether Consumption Growth Rate (2014-2019) (MT) Figure Southeast Asia Triethyleneglycol Divinyl Ether Consumption Growth Rate (2014-2019) (MT) Table BASF Company Details Table BASF Description and Business Overview Table BASF Triethyleneglycol Divinyl Ether Production (MT), Revenue (Million US$), Price (USD/MT) and Gross Margin (2014-2019) Table BASF Triethyleneglycol Divinyl Ether Production Growth Rate (2014-2019) Table BASF Triethyleneglycol Divinyl Ether Production Market Share in Global Market Table BASF Recent Development Table Chongqin Happy Company Details Table Chongqin Happy Description and Business Overview Table Chongqin Happy Triethyleneglycol Divinyl Ether Production (MT), Revenue (Million US$), Price (USD/MT) and Gross Margin (2014-2019) Table Chongqin Happy Triethyleneglycol Divinyl Ether Production Growth Rate (2014-2019) Table Chongqin Happy Triethyleneglycol Divinyl Ether Production Market Share in Global Market Table Chongqin Happy Recent Development Table Hubei Xinjing New Material Company Details Table Hubei Xinjing New Material Description and Business Overview Table Hubei Xinjing New Material Triethyleneglycol Divinyl Ether Production (MT), Revenue (Million US$), Price (USD/MT) and Gross Margin (2014-2019) Table Hubei Xinjing New Material Triethyleneglycol Divinyl Ether Production Growth Rate (2014-2019) Table Hubei Xinjing New Material Triethyleneglycol Divinyl Ether Production Market Share in Global Market Table Hubei Xinjing New Material Recent Development Table Nanwei Chemical Company Details Table Nanwei Chemical Description and Business Overview Table Nanwei Chemical Triethyleneglycol Divinyl Ether Production (MT), Revenue (Million US$), Price (USD/MT) and Gross Margin (2014-2019) Table Nanwei Chemical Triethyleneglycol Divinyl Ether Production Growth Rate (2014-2019) Table Nanwei Chemical Triethyleneglycol Divinyl Ether Production Market Share in Global Market Table Nanwei Chemical Recent Development Table Global Triethyleneglycol Divinyl Ether Capacity, Production Forecast 2019-2025 (MT) Figure Global Triethyleneglycol Divinyl Ether Capacity Forecast 2019-2025 (MT) Figure Global Triethyleneglycol Divinyl Ether Production Forecast 2019-2025 (MT) Figure Global Triethyleneglycol Divinyl Ether Production Value Forecast 2019-2025 (Million US$) Table Global Triethyleneglycol Divinyl Ether Production Value Forecast 2019-2025 (Million US$) Table Global Triethyleneglycol Divinyl Ether Production Forecast by Regions 2019-2025 (MT) Table Global Triethyleneglycol Divinyl Ether Production Market Share Forecast by Regions 2019-2025 Table Global Triethyleneglycol Divinyl Ether Production Value Forecast by Regions 2019-2025 (Million US$) Table Global Triethyleneglycol Divinyl Ether Consumption Forecast by Regions 2019-2025 (MT) Table Global Triethyleneglycol Divinyl Ether Consumption Market Share Forecast by Regions 2019-2025 Table United States Triethyleneglycol Divinyl Ether Production and Production Value Forecast 2019-2025 (MT) & (Million US$) Figure United States Triethyleneglycol Divinyl Ether Production Growth Forecast 2019-2025 (MT) Table United States Triethyleneglycol Divinyl Ether Production Value Forecast 2019-2025 (Million US$) Figure United States Triethyleneglycol Divinyl Ether Consumption Forecast 2019-2025 (MT) Table European Union Triethyleneglycol Divinyl Ether Production and Production Value Forecast 2019-2025 (MT) & (Million US$) Figure European Union Triethyleneglycol Divinyl Ether Production Growth Forecast 2019-2025 (MT) Table European Union Triethyleneglycol Divinyl Ether Production Value Forecast 2019-2025 (Million US$) Figure European Union Triethyleneglycol Divinyl Ether Consumption Forecast 2019-2025 (MT) Table China Triethyleneglycol Divinyl Ether Production and Production Value Forecast 2019-2025 (MT) & (Million US$) Figure China Triethyleneglycol Divinyl Ether Production Growth Forecast 2019-2025 (MT) Table China Triethyleneglycol Divinyl Ether Production Value Forecast 2019-2025 (Million US$) Figure China Triethyleneglycol Divinyl Ether Consumption Forecast 2019-2025 (MT) Figure Japan Triethyleneglycol Divinyl Ether Production Growth Forecast 2019-2025 (MT) Figure Japan Triethyleneglycol Divinyl Ether Consumption Forecast 2019-2025 (MT) Figure Korea Triethyleneglycol Divinyl Ether Production Growth Forecast 2019-2025 (MT) Figure Korea Triethyleneglycol Divinyl Ether Consumption Forecast 2019-2025 (MT) Figure India Triethyleneglycol Divinyl Ether Production Growth Forecast 2019-2025 (MT) Figure India Triethyleneglycol Divinyl Ether Consumption Forecast 2019-2025 (MT) Figure Southeast Asia Triethyleneglycol Divinyl Ether Production Growth Forecast 2019-2025 (MT) Figure Southeast Asia Triethyleneglycol Divinyl Ether Consumption Forecast 2019-2025 (MT) Table Global Triethyleneglycol Divinyl Ether Production Forecast by Type 2019-2025 (MT) Figure Global Triethyleneglycol Divinyl Ether Production Forecast by Type 2019-2025 (MT) Figure Global Triethyleneglycol Divinyl Ether Production Market Share Forecast by Type 2019-2025 Table Global Triethyleneglycol Divinyl Ether Production Value Forecast by Type 2019-2025 (Million US$) Figure Global Triethyleneglycol Divinyl Ether Production Value Forecast by Type 2019-2025 (Million US$) Figure Global Triethyleneglycol Divinyl Ether Production Value Market Share Forecast by Type 2019-2025 Table Global Triethyleneglycol Divinyl Ether Consumption Forecast by Application 2019-2025 (MT) Figure Global Triethyleneglycol Divinyl Ether Consumption Forecast by Application 2019-2025 (MT) Figure Global Triethyleneglycol Divinyl Ether Consumption Market Share Forecast by Application 2019-2025 Figure Triethyleneglycol Divinyl Ether Value Chain Table Triethyleneglycol Divinyl Ether Distributors List Table Triethyleneglycol Divinyl Ether Customers List Table Porter's Five Forces Analysis Table Research Programs/Design for This Report Figure Bottom-up and Top-down Approaches for This Report Figure Data Triangulation Table Key Data Information from Secondary Sources Table Key Data Information from Primary Sources

BASF Chongqin Happy Hubei Xinjing New Material Nanwei Chemical