Table of Content 1 Tunnel and Metro Ventilation Market Overview 1.1 Product Overview 1.2 Market Segmentation 1.2.1 Market by Types 1.2.2 Market by Applications 1.2.3 Market by Regions 1.3 Global Tunnel and Metro Ventilation Market Size (2018-2028) 1.3.1 Global Tunnel and Metro Ventilation Revenue ($) and Growth Rate (2018-2028) 1.3.2 Global Tunnel and Metro Ventilation Sales Volume and Growth Rate (2018-2028) 1.4 Research Method and Logic 1.4.1 Research Method 1.4.2 Research Data Source 2 Global Tunnel and Metro Ventilation Market Historic Revenue ($) and Sales Volume Segment by Type 2.1 Global Tunnel and Metro Ventilation Historic Revenue ($) by Type (2018-2023) 2.2 Global Tunnel and Metro Ventilation Historic Sales Volume by Type (2018-2023) 2.3 Fans & Blowers Sales and Price (2018-2023) 2.4 Refrigeration & Cooling Systems Sales and Price (2018-2023) 2.5 Heating Sales and Price (2018-2023) 3 Global Tunnel and Metro Ventilation Historic Revenue ($) and Sales Volume by Application (2018-2023) 3.1 Global Tunnel and Metro Ventilation Historic Revenue ($) by Application (2018-2023) 3.2 Global Tunnel and Metro Ventilation Historic Sales Volume by Application (2018-2023) 3.3 Road Tunnel Sales, Revenue and Growth Rate (2018-2023) 3.4 Metro Sales, Revenue and Growth Rate (2018-2023) 4 Market Dynamic and Trends 4.1 Industry Development Trends under Global Inflation 4.2 Impact of Russia and Ukraine War 4.3 Driving Factors for Tunnel and Metro Ventilation Market 4.4 Factors Challenging the Market 4.5 Opportunities 4.6 Risk Analysis 4.7 Industry News and Policies by Regions 4.7.1 Tunnel and Metro Ventilation Industry News 4.7.2 Tunnel and Metro Ventilation Industry Policies 5 Global Tunnel and Metro Ventilation Market Revenue ($) and Sales Volume by Major Regions 5.1 Global Tunnel and Metro Ventilation Sales Volume by Region (2018-2023) 5.2 Global Tunnel and Metro Ventilation Market Revenue ($) by Region (2018-2023) 6 Global Tunnel and Metro Ventilation Import Volume and Export Volume by Major Regions 6.1 Global Tunnel and Metro Ventilation Import Volume by Region (2018-2023) 6.2 Global Tunnel and Metro Ventilation Export Volume by Region (2018-2023) 7 North America Tunnel and Metro Ventilation Market Current Status (2018-2023) 7.1 Overall Market Size Analysis (2018-2023) 7.1.1 North America Tunnel and Metro Ventilation Revenue ($) and Growth Rate (2018-2023) 7.1.2 North America Tunnel and Metro Ventilation Sales Volume and Growth Rate (2018-2023) 7.2 North America Tunnel and Metro Ventilation Market Trends Analysis Under Global Inflation 7.3 North America Tunnel and Metro Ventilation Sales Volume and Revenue ($) by Country (2018-2023) 7.4 United States 7.4.1 United States Tunnel and Metro Ventilation Revenue ($) and Growth Rate (2018-2023) 7.5 Canada 7.5.1 Canada Tunnel and Metro Ventilation Revenue ($) and Growth Rate (2018-2023) 8 Asia Pacific Tunnel and Metro Ventilation Market Current Status (2018-2023) 8.1 Overall Market Size Analysis (2018-2023) 8.1.1 Asia Pacific Tunnel and Metro Ventilation Revenue ($) and Growth Rate (2018-2023) 8.1.2 Asia Pacific Tunnel and Metro Ventilation Sales Volume and Growth Rate (2018-2023) 8.2 Asia Pacific Tunnel and Metro Ventilation Market Trends Analysis Under Global Inflation 8.3 Asia Pacific Tunnel and Metro Ventilation Sales Volume and Revenue ($) by Country (2018-2023) 8.4 China 8.4.1 China Tunnel and Metro Ventilation Revenue ($) and Growth Rate (2018-2023) 8.5 Japan 8.5.1 Japan Tunnel and Metro Ventilation Revenue ($) and Growth Rate (2018-2023) 8.6 India 8.6.1 India Tunnel and Metro Ventilation Revenue ($) and Growth Rate (2018-2023) 8.7 South Korea 8.7.1 South Korea Tunnel and Metro Ventilation Revenue ($) and Growth Rate (2018-2023) 8.8 Southeast Asia 8.8.1 Southeast Asia Tunnel and Metro Ventilation Revenue ($) by Country (2018-2023) 8.9 Australia 8.9.1 Australia Tunnel and Metro Ventilation Revenue ($) and Growth Rate (2018-2023) 9 Europe Tunnel and Metro Ventilation Market Current Status (2018-2023) 9.1 Overall Market Size Analysis (2018-2023) 9.1.1 Europe Tunnel and Metro Ventilation Revenue ($) and Growth Rate (2018-2023) 9.2.1 Europe Tunnel and Metro Ventilation Sales Volume and Growth Rate (2018-2023) 9.2 Europe Tunnel and Metro Ventilation Market Trends Analysis Under Global Inflation 9.3 Europe Tunnel and Metro Ventilation Sales Volume and Revenue ($) by Country (2018-2023) 9.4 Germany 9.4.1 Germany Tunnel and Metro Ventilation Revenue ($) and Growth Rate (2018-2023) 9.5 France 9.5.1 France Tunnel and Metro Ventilation Revenue ($) and Growth Rate (2018-2023) 9.6 United Kingdom 9.6.1 United Kingdom Tunnel and Metro Ventilation Revenue ($) and Growth Rate (2018-2023) 9.7 Italy 9.7.1 Italy Tunnel and Metro Ventilation Revenue ($) and Growth Rate (2018-2023) 9.8 Spain 9.8.1 Spain Tunnel and Metro Ventilation Revenue ($) and Growth Rate (2018-2023) 9.9 Russia 9.9.1 Russia Tunnel and Metro Ventilation Revenue ($) and Growth Rate (2018-2023) 9.10 Poland 9.10.1 Poland Tunnel and Metro Ventilation Revenue ($) and Growth Rate (2018-2023) 10 Latin America Tunnel and Metro Ventilation Market Current Status (2018-2023) 10.1 Overall Market Size Analysis (2018-2023) 10.1.1 Latin America Tunnel and Metro Ventilation Revenue ($) and Growth Rate (2018-2023) 10.1.2 Latin America Tunnel and Metro Ventilation Sales Volume and Growth Rate (2018-2023) 10.2 Latin America Tunnel and Metro Ventilation Market Trends Analysis Under Global Inflation 10.3 Latin America Tunnel and Metro Ventilation Sales Volume and Revenue ($) by Country (2018-2023) 10.4 Mexico 10.4.1 Mexico Tunnel and Metro Ventilation Revenue ($) and Growth Rate (2018-2023) 10.5 Brazil 10.5.1 Brazil Tunnel and Metro Ventilation Revenue ($) and Growth Rate (2018-2023) 10.6 Argentina 10.6.1 Argentina Tunnel and Metro Ventilation Revenue ($) and Growth Rate (2018-2023) 11 Middle East and Africa Tunnel and Metro Ventilation Market Current Status (2018-2023) 11.1 Overall Market Size Analysis (2018-2023) 11.1.1 Middle East and Africa Tunnel and Metro Ventilation Revenue ($) and Growth Rate (2018-2023) 11.2.1 Middle East and Africa Tunnel and Metro Ventilation Sales Volume and Growth Rate (2018-2023) 11.2 Middle East and Africa Tunnel and Metro Ventilation Market Trends Analysis Under Global Inflation 11.3 Middle East and Africa Tunnel and Metro Ventilation Sales Volume and Revenue ($) by Country (2018-2023) 11.4 GCC Countries 11.4.1 GCC Countries Tunnel and Metro Ventilation Revenue ($) and Growth Rate (2018-2023) 11.5 Africa 11.5.1 Africa Tunnel and Metro Ventilation Revenue ($) and Growth Rate (2018-2023) 12 Market Competition Analysis and Key Companies Profiles 12.1 Market Competition by Key Players 12.1.1 Global Tunnel and Metro Ventilation Revenue ($) and Market Share of Key Players 12.1.2 Global Tunnel and Metro Ventilation Sales Volume and Market Share of Key Players 12.1.3 Global Tunnel and Metro Ventilation Average Price by Players 12.1.4 Mergers & Acquisitions, Expansion 12.2 TLT-Turbo Market Performance and Business Analysis 12.2.1 Company Profiles 12.2.2 Product Profiles and Application 12.2.3 TLT-Turbo Market Performance Analysis (Revenue ($), Sales Volume, Price, Gross, Gross Margin) 12.3 Epiroc Market Performance and Business Analysis 12.3.1 Company Profiles 12.3.2 Product Profiles and Application 12.3.3 Epiroc Market Performance Analysis (Revenue ($), Sales Volume, Price, Gross, Gross Margin) 12.4 Howden Market Performance and Business Analysis 12.4.1 Company Profiles 12.4.2 Product Profiles and Application 12.4.3 Howden Market Performance Analysis (Revenue ($), Sales Volume, Price, Gross, Gross Margin) 12.5 Zitron Market Performance and Business Analysis 12.5.1 Company Profiles 12.5.2 Product Profiles and Application 12.5.3 Zitron Market Performance Analysis (Revenue ($), Sales Volume, Price, Gross, Gross Margin) 12.6 ABB Market Performance and Business Analysis 12.6.1 Company Profiles 12.6.2 Product Profiles and Application 12.6.3 ABB Market Performance Analysis (Revenue ($), Sales Volume, Price, Gross, Gross Margin) 12.7 Systemair Market Performance and Business Analysis 12.7.1 Company Profiles 12.7.2 Product Profiles and Application 12.7.3 Systemair Market Performance Analysis (Revenue ($), Sales Volume, Price, Gross, Gross Margin) 12.8 ABC Ventilation Systems Market Performance and Business Analysis 12.8.1 Company Profiles 12.8.2 Product Profiles and Application 12.8.3 ABC Ventilation Systems Market Performance Analysis (Revenue ($), Sales Volume, Price, Gross, Gross Margin) 12.9 Chicago Blower Market Performance and Business Analysis 12.9.1 Company Profiles 12.9.2 Product Profiles and Application 12.9.3 Chicago Blower Market Performance Analysis (Revenue ($), Sales Volume, Price, Gross, Gross Margin) 12.10 Twin City Fan and Blower Market Performance and Business Analysis 12.10.1 Company Profiles 12.10.2 Product Profiles and Application 12.10.3 Twin City Fan and Blower Market Performance Analysis (Revenue ($), Sales Volume, Price, Gross, Gross Margin) 13 Value Chain of the Tunnel and Metro Ventilation Market 13.1 Value Chain Status 13.1.1 Value Chain Status Under Global Inflation 13.2 Key Raw Materials and Suppliers 13.2.1 Key Raw Materials Introduction 13.2.2 Key Suppliers of Raw Materials 13.3 Manufacturing Cost Structure Analysis 13.3.1 Production Process Analysis 13.3.2 Manufacturing Cost Structure of Tunnel and Metro Ventilation 13.3.3 Raw Material Cost of Tunnel and Metro Ventilation 13.3.4 Labor Cost of Tunnel and Metro Ventilation 13.4 Major Distributors by Region 13.5 Customer Analysis 14 New Project Feasibility Analysis 14.1 Industry Barriers and New Entrants SWOT Analysis 14.2 Analysis and Suggestions on New Project Investment 15 Global Tunnel and Metro Ventilation Market Revenue ($) and Sales Volume Forecast Segment by Type, Application and Region 15.1 Global Tunnel and Metro Ventilation Revenue ($) and Sales Volume Forecast by Type (2023-2028) 15.1.1 Global Tunnel and Metro Ventilation Revenue ($) Forecast by Type (2023-2028) 15.1.2 Global Tunnel and Metro Ventilation Sales Volume Forecast by Type (2023-2028) 15.2 Global Tunnel and Metro Ventilation Revenue ($) and Sales Volume Forecast by Application (2023-2028) 15.2.1 Global Tunnel and Metro Ventilation Revenue ($) Forecast by Application (2023-2028) 15.2.2 Global Tunnel and Metro Ventilation Sales Volume Forecast by Application (2023-2028) 15.3 Global Tunnel and Metro Ventilation Sales Volume Forecast by Region (2023-2028) 15.4 Global Tunnel and Metro Ventilation Revenue ($) Forecast by Region (2023-2028) 16 Research Findings and Conclusion

List of Tables and Figures Figure Tunnel and Metro Ventilation Picture Table Tunnel and Metro Ventilation Definition Table Description and Definitions Figure Fans & Blowers Features Figure Refrigeration & Cooling Systems Features Figure Heating Features Table Description and Definitions Figure Road Tunnel Figure Metro Figure North America Tunnel and Metro Ventilation Revenue ($) and Growth Rate (2018-2028) Figure Asia Pacific Tunnel and Metro Ventilation Revenue ($) and Growth Rate (2018-2028) Figure Europe Tunnel and Metro Ventilation Revenue ($) and Growth Rate (2018-2028) Figure Latin America Tunnel and Metro Ventilation Revenue ($) and Growth Rate (2018-2028) Figure Middle East and Africa Tunnel and Metro Ventilation Revenue ($) and Growth Rate (2018-2028) Figure Global Tunnel and Metro Ventilation Revenue ($) and Growth Rate (2018-2028) Figure Global Tunnel and Metro Ventilation Sales Volume and Growth Rate (2018-2028) Table Global Tunnel and Metro Ventilation Historic Revenue ($) by Type (2018-2023) (Million USD) Table Global Tunnel and Metro Ventilation Historic Revenue ($) Share by Type (2018-2023) Table Global Tunnel and Metro Ventilation Historic Sales Volume by Type (2018-2023) Table Global Tunnel and Metro Ventilation Historic Sales Volume Share by Type (2018-2023) Figure Global Fans & Blowers Sales and Growth Rate (2018-2023) Figure Global Fans & Blowers Price (2018-2023) Figure Global Refrigeration & Cooling Systems Sales and Growth Rate (2018-2023) Figure Global Refrigeration & Cooling Systems Price (2018-2023) Figure Global Heating Sales and Growth Rate (2018-2023) Figure Global Heating Price (2018-2023) Table Global Tunnel and Metro Ventilation Historic Revenue ($) by Application (2018-2023) (Million USD) Table Global Tunnel and Metro Ventilation Historic Revenue ($) Share by Application (2018-2023) Table Global Tunnel and Metro Ventilation Historic Sales Volume by Application (2018-2023) (Million USD) Table Global Tunnel and Metro Ventilation Historic Sales Volume Share by Application (2018-2023) Figure Global Road Tunnel Sales and Growth Rate (2018-2023) Figure Global Road Tunnel Revenue and Growth Rate (2018-2023) Figure Global Metro Sales and Growth Rate (2018-2023) Figure Global Metro Revenue and Growth Rate (2018-2023) Table Industry Development Trends under Global Inflation Table Impact of Russia and Ukraine War Table Driving Factors for Tunnel and Metro Ventilation Market Table Factors Challenging the Market Table Opportunities Table Risk Analysis Table Industry News by Regions Table Industry Policies by Regions Table Global Tunnel and Metro Ventilation Sales Volume by Region (2018-2023) Table Global Tunnel and Metro Ventilation Sales Volume Share by Region (2018-2023) Table Global Tunnel and Metro Ventilation Market Revenue ($) by Region (2018-2023) Table Global Tunnel and Metro Ventilation Market Revenue ($) Share by Region (2018-2023) Table Global Tunnel and Metro Ventilation Import Volume by Region (2018-2023) Table Global Tunnel and Metro Ventilation Export Volume by Region (2018-2023) Figure North America Tunnel and Metro Ventilation Revenue ($) and Growth Rate (2018-2023) Figure North America Tunnel and Metro Ventilation Sales Volume and Growth Rate (2018-2023) Table North America Tunnel and Metro Ventilation Market Trends Analysis Under Global Inflation Table North America Tunnel and Metro Ventilation Revenue ($) by Country (2018-2023) Table North America Tunnel and Metro Ventilation Sales Volume by Country (2018-2023) Figure United States Tunnel and Metro Ventilation Revenue ($) and Growth Rate (2018-2023) Figure Canada Tunnel and Metro Ventilation Revenue ($) and Growth Rate (2018-2023) Figure Asia Pacific Tunnel and Metro Ventilation Revenue ($) and Growth Rate (2018-2023) Figure Asia Pacific Tunnel and Metro Ventilation Sales Volume and Growth Rate (2018-2023) Table Asia Pacific Tunnel and Metro Ventilation Market Trends Analysis Under Global Inflation Table Asia Pacific Tunnel and Metro Ventilation Revenue ($) by Country (2018-2023) Table Asia Pacific Tunnel and Metro Ventilation Sales Volume by Country (2018-2023) Figure China Tunnel and Metro Ventilation Revenue ($) and Growth Rate (2018-2023) Figure Japan Tunnel and Metro Ventilation Revenue ($) and Growth Rate (2018-2023) Figure India Tunnel and Metro Ventilation Revenue ($) and Growth Rate (2018-2023) Figure South Korea Tunnel and Metro Ventilation Revenue ($) and Growth Rate (2018-2023) Table Southeast Asia Tunnel and Metro Ventilation Revenue ($) by Country (2018-2023) Figure Australia Tunnel and Metro Ventilation Revenue ($) and Growth Rate (2018-2023) Figure Europe Tunnel and Metro Ventilation Revenue ($) and Growth Rate (2018-2023) Figure Europe Tunnel and Metro Ventilation Sales Volume and Growth Rate (2018-2023) Table Europe Tunnel and Metro Ventilation Market Trends Analysis Under Global Inflation Table Europe Tunnel and Metro Ventilation Revenue ($) by Country (2018-2023) Table Europe Tunnel and Metro Ventilation Sales Volume by Country (2018-2023) Figure Germany Tunnel and Metro Ventilation Revenue ($) and Growth Rate (2018-2023) Figure France Tunnel and Metro Ventilation Revenue ($) and Growth Rate (2018-2023) Figure United Kingdom Tunnel and Metro Ventilation Revenue ($) and Growth Rate (2018-2023) Figure Italy Tunnel and Metro Ventilation Revenue ($) and Growth Rate (2018-2023) Figure Spain Tunnel and Metro Ventilation Revenue ($) and Growth Rate (2018-2023) Figure Russia Tunnel and Metro Ventilation Revenue ($) and Growth Rate (2018-2023) Figure Poland Tunnel and Metro Ventilation Revenue ($) and Growth Rate (2018-2023) Figure Latin America Tunnel and Metro Ventilation Revenue ($) and Growth Rate (2018-2023) Figure Latin America Tunnel and Metro Ventilation Sales Volume and Growth Rate (2018-2023) Table Latin America Tunnel and Metro Ventilation Market Trends Analysis Under Global Inflation Table Latin America Tunnel and Metro Ventilation Revenue ($) by Country (2018-2023) Table Latin America Tunnel and Metro Ventilation Sales Volume by Country (2018-2023) Figure Mexico Tunnel and Metro Ventilation Revenue ($) and Growth Rate (2018-2023) Figure Brazil Tunnel and Metro Ventilation Revenue ($) and Growth Rate (2018-2023) Figure Argentina Tunnel and Metro Ventilation Revenue ($) and Growth Rate (2018-2023) Figure Middle East and Africa Tunnel and Metro Ventilation Revenue ($) and Growth Rate (2018-2023) Figure Middle East and Africa Tunnel and Metro Ventilation Sales Volume and Growth Rate (2018-2023) Table Middle East and Africa Tunnel and Metro Ventilation Market Trends Analysis Under Global Inflation Table Middle East and Africa Tunnel and Metro Ventilation Revenue ($) by Country (2018-2023) Table Middle East and Africa Tunnel and Metro Ventilation Sales Volume by Country (2018-2023) Figure GCC Countries Tunnel and Metro Ventilation Revenue ($) and Growth Rate (2018-2023) Figure Africa Tunnel and Metro Ventilation Revenue ($) and Growth Rate (2018-2023) Table Global Tunnel and Metro Ventilation Revenue ($) of Key Players (2018-2023) Table Global Tunnel and Metro Ventilation Revenue ($) Share of Key Players (2018-2023) Table Global Tunnel and Metro Ventilation Sales Volume of Key Players (2018-2023) Table Global Tunnel and Metro Ventilation Sales Volume Share of Key Players (2018-2023) Table Global Tunnel and Metro Ventilation Average Price of Key Players (2018-2023) Table Mergers & Acquisitions, Expansion Plans Table TLT-Turbo Company Profiles Table Product Profiles and Application Table TLT-Turbo Market Performance Analysis (Revenue ($), Sales Volume, Price, Gross, Gross Margin) Figure TLT-Turbo Production and Growth Rate Figure TLT-Turbo Value ($) Market Share 2018-2023 Table Epiroc Company Profiles Table Product Profiles and Application Table Epiroc Market Performance Analysis (Revenue ($), Sales Volume, Price, Gross, Gross Margin) Figure Epiroc Production and Growth Rate Figure Epiroc Value ($) Market Share 2018-2023 Table Howden Company Profiles Table Product Profiles and Application Table Howden Market Performance Analysis (Revenue ($), Sales Volume, Price, Gross, Gross Margin) Figure Howden Production and Growth Rate Figure Howden Value ($) Market Share 2018-2023 Table Zitron Company Profiles Table Product Profiles and Application Table Zitron Market Performance Analysis (Revenue ($), Sales Volume, Price, Gross, Gross Margin) Figure Zitron Production and Growth Rate Figure Zitron Value ($) Market Share 2018-2023 Table ABB Company Profiles Table Product Profiles and Application Table ABB Market Performance Analysis (Revenue ($), Sales Volume, Price, Gross, Gross Margin) Figure ABB Production and Growth Rate Figure ABB Value ($) Market Share 2018-2023 Table Systemair Company Profiles Table Product Profiles and Application Table Systemair Market Performance Analysis (Revenue ($), Sales Volume, Price, Gross, Gross Margin) Figure Systemair Production and Growth Rate Figure Systemair Value ($) Market Share 2018-2023 Table ABC Ventilation Systems Company Profiles Table Product Profiles and Application Table ABC Ventilation Systems Market Performance Analysis (Revenue ($), Sales Volume, Price, Gross, Gross Margin) Figure ABC Ventilation Systems Production and Growth Rate Figure ABC Ventilation Systems Value ($) Market Share 2018-2023 Table Chicago Blower Company Profiles Table Product Profiles and Application Table Chicago Blower Market Performance Analysis (Revenue ($), Sales Volume, Price, Gross, Gross Margin) Figure Chicago Blower Production and Growth Rate Figure Chicago Blower Value ($) Market Share 2018-2023 Table Twin City Fan and Blower Company Profiles Table Product Profiles and Application Table Twin City Fan and Blower Market Performance Analysis (Revenue ($), Sales Volume, Price, Gross, Gross Margin) Figure Twin City Fan and Blower Production and Growth Rate Figure Twin City Fan and Blower Value ($) Market Share 2018-2023 Figure Industry Chain Analysis of Tunnel and Metro Ventilation Table Value Chain Status Under Global Inflation Table Key Raw Materials Introduction Table Upstream Raw Material Suppliers of Tunnel and Metro Ventilation with Contact Information Figure Production Process of Tunnel and Metro Ventilation Figure Manufacturing Cost Structure of Tunnel and Metro Ventilation Table Major Distributors of Tunnel and Metro Ventilation with Contact Information Table Major Downstream Buyers of Tunnel and Metro Ventilation with Contact Information Figure Industry Resource/Technology/Labor Importance Analysis Table New Entrants SWOT Analysis Table New Project Analysis of Investment Recovery Table Global Tunnel and Metro Ventilation Revenue ($) Forecast by Type (2023-2028) (Million USD) Table Global Tunnel and Metro Ventilation Revenue ($) Share Forecast by Type (2023-2028) Table Global Tunnel and Metro Ventilation Sales Volume Forecast by Type (2023-2028) (Million USD) Table Global Tunnel and Metro Ventilation Sales Volume Share Forecast by Type (2023-2028) Table Global Tunnel and Metro Ventilation Revenue ($) Forecast by Application (2023-2028) (Million USD) Table Global Tunnel and Metro Ventilation Revenue ($) Share Forecast by Application (2023-2028) Table Global Tunnel and Metro Ventilation Sales Volume Forecast by Application (2023-2028) (Million USD) Table Global Tunnel and Metro Ventilation Sales Volume Share Forecast by Application (2023-2028) Table Global Tunnel and Metro Ventilation Sales Volume Forecast by Region (2023-2028) Table Global Tunnel and Metro Ventilation Sales Volume Share Forecast by Region (2023-2028) Table Global Tunnel and Metro Ventilation Revenue ($) Forecast by Region (2023-2028) Table Global Tunnel and Metro Ventilation Revenue ($) Share Forecast by Region (2023-2028)