Class A Members
| No. | Company | Country | Website |
| 1 | Emerson Process Management Co. | China | www.EmersonProcess.cn |
| 2 | Hexagon Agility | Germany | |
| 3 | KOGAS | South Korea | www.kogas.or.kr |
| 4 | Kwangshin Machine Industry Co., Ltd | South Korea | www.kwangshin.com |
| 5 | Parker Hannifin Corporation | India | www.parker.com |
| 6 | PETRONAS | Malaysia | www.petronas.com.my |
| 7 | PT Perusahaan Gas Negara | Indonesia | www.pgn.co.id |
| 8 | PTT Public Company Limited | Thailand | www.pttplc.com |
| 9 | Sime Darby Energy Solutions Sdn Bhd | Malaysia | www.tractors.com.my |
Class B Members
| No. | Company | Country | Website |
Class C Members
| No. | Company | Country | Website |
| 1 | ANGI Energy Systems | USA | www.angienergy.com |
| 2 | Bireme Group Pte Ltd | Singapore | www.biremegroup.com |
| 3 | Bukit Sedap Pte Ltd | Singapore | www.cheerway.com.sg |
| 4 | Broadening Consulting LLP | Singapore | www.broadening.net |
| 5 | Compac Industries Ltd | New Zealand | www.compacngv.com |
| 6 | Gas Academy Pte Ltd | Singapore | www.gasacademy.com.sg |
| 7 | LGS Solutions Sdn Bhd | Malaysia | www.lgs.com.my |
| 8 | Melchers Techexport GmbH | Germany | www.melchers-techexport.com |
| 9 | Mirpur Ceramic Works CNG RS & CW | Bangladesh | www.mirpurceramic.com |
| 10 | NGVI | South Korea | www.ngvi.co.kr |
| 11 | PT Citra Nusantara Gemilang | Indonesia | |
| 12 | PT Raja Rafa Samudra | Indonesia | www.rajarafasamudra.com |
| 13 | Tiger Automotive Co. Ltd | Thailand | |
| 14 | TGT Fuel Technologies Pvt Ltd | India | www.tgtgas.com |
| 15 | TNE Engineering Sdn Bhd | Malaysia | |
Class D Members
| No. | Company | Country | Website |
| 1 | APCNGI (Asosiasi Pengusaha CNG Indonesia) | Indonesia | www.apcngi.org |
| 2 | Automotive Data of China Co., Ltd | China | www.catarc.ac.cn |
| 3 | Korea Association for Natural Gas and Fuel Cell Electric Vehicles (KANFV) | South Korea | www.kanfv.org |
| 4 | MANGVI 2018 | Malaysia | www.mangvi.org |
| 5 | NGV Italia | Italy | www.ngvsystem.com |
| 6 | Thailand NGV Association | Thailand | www.pttplc.com |
| 7 | The Japan Gas Association | Japan | www.gas.or.jp |