| Company | Class | Country | Products & Services Categories |
| Hexagon Purus | A | Germany | -Manufacturer Type IV Composite Pressure Vessel |
| Kwangshin Machine Industry Co., Ltd | A | Korea | -CNG Compressor & Dispenser Manufacturer |
| PETRONAS | A | Malaysia | -Gas Supplier -Refuelling Station Operator |
| PT Gagas Energi Indonesia | A | Indonesia | – |
| PTT Public Company Limited | A | Thailand | -Gas Supplier -Refuelling Station Operator |
| ANGI Energy Systems | C | USA | – Design and manufacturing CNG refuelling systems |
| Broadening Consulting LLP | C | Singapore | -Consulting for logistics and transport industry with focus on Energy sector |
| Bukit Sedap Pte Ltd | C | Singapore | – Natural Gas Investment Company |
| Compac Industries Ltd | C | New Zealand | – Manufacturers of dispensers and dispenser technology for CNG stations worldwide |
| LGS Solution Sdn Bhd | C | Malaysia | – Consultant for energy, Oil & gas and air pollution sectors |
| Melchers Techexport GmbH | C | Germany | – Compressor & Dispenser Manufacturer / Supplier – Vehicle Conversion Workshop -Vehicle Conversion Kits Manufacturer / Supplier – Consultant / R&D / Training / Testing |
| Mirpur Ceramic Works CNG RS & CW | C | Bangladesh | – Refuelling Station Operator |
| NGVI | C | Korea | – Vehicle Conversion Kit Supplier |
| PT Citra Nusantara Gemilang | C | Indonesia | – Refuelling Station Operator – Conversion Workshop Operator |
| PT Raja Rafa Samudra | C | Indonesia | – |
| Tiger Automotive Co., Ltd | C | Thailand | – |
| TGT Fuel Technologies Pvt. Ltd | C | India | |
| TN Engineering Sdn Bhd | C | Malaysia | – Vehicle & Engine Converter |
| APCNGI (Asosiasi Pengusaha CNG Indonesia) | D | Indonesia | – Association |
| Automotive Data of China Co., Ltd | D | China | – Consultant / R&D / Training / Testing |
| Korean Association for Natural Gas & Fuel Cell Electric Vehicles (KANFV) | D | South Korea | – Association |
| MANGVI 2018 | D | Malaysia | – Association |
| NGV Italia | D | Italy | – |
| Thailand NGV Association (TANGV) | D | Thailand | – Association |
| The Japan Gas Association | D | Japan | – Association |
