| Idemitsu Kosan Co., Ltd. | Japan | Tokyo, Japan | Synthetic rubber, petrochemicals |
| ENEOS Corporation | Japan | Tokyo, Japan | Rubber materials, petrochemicals |
| NOF Corporation | Japan | Tokyo, Japan | Rubber additives, processing chemicals |
| Nissan Chemical Corporation | Japan | Tokyo, Japan | Specialty rubber chemicals |
| Showa Denko Materials Co., Ltd. | Japan | Tokyo, Japan | Rubber materials, additives |
| Tokuyama Corporation | Japan | Tokyo, Japan | Chemical intermediates |
| Sumitomo Seika Chemicals Co., Ltd. | Japan | Osaka, Japan | Polymer additives |
| Daicel Corporation | Japan | Osaka, Japan | Chemical intermediates |
| DKS Co. Ltd. | Japan | Kyoto, Japan | Rubber chemicals, additives |
| Nippon Shokubai Co., Ltd. | Japan | Osaka, Japan | Chemical intermediates |
| Tosoh Finechem Corporation | Japan | Tokyo, Japan | Rubber chemicals |
| Kurabo Industries Ltd. | Japan | Osaka, Japan | Rubber materials |
| Denki Kagaku Kogyo Kabushiki Kaisha (Denka) | Japan | Tokyo, Japan | Rubber additives |
| LG MMA Corporation | South Korea | Seoul, South Korea | Chemical intermediates |
| SK Chemicals Co., Ltd. | South Korea | Seongnam, South Korea | Rubber chemicals |
| Hanwha TotalEnergies Petrochemical | South Korea | Seosan, South Korea | Petrochemicals |
| DL Chemical Co., Ltd. | South Korea | Seoul, South Korea | Elastomers |
| KCC Corporation | South Korea | Seoul, South Korea | Silicone rubber additives |
| Samyang Corporation | South Korea | Seoul, South Korea | Chemical intermediates |
| Taekwang Industrial Co., Ltd. | South Korea | Seoul, South Korea | Rubber chemicals |
| Aekyung Chemical Co., Ltd. | South Korea | Seoul, South Korea | Rubber additives |
| S-Oil Corporation | South Korea | Seoul, South Korea | Petrochemicals |
| IRPC Advanced Materials | Thailand | Rayong, Thailand | Rubber materials |
| Bangkok Synthetics Co., Ltd. | Thailand | Bangkok, Thailand | Synthetic rubber |
| Thai Synthetic Rubbers Co., Ltd. | Thailand | Rayong, Thailand | Synthetic rubber |
| Thai Mitsui Specialty Chemicals | Thailand | Bangkok, Thailand | Rubber additives |
| Vinythai Public Company Ltd. | Thailand | Bangkok, Thailand | Chemical intermediates |
| Indorama Polyester Industries | Thailand | Rayong, Thailand | Chemical intermediates |
| PTT Phenol Company Ltd. | Thailand | Rayong, Thailand | Chemical intermediates |
| SCG Performance Chemicals | Thailand | Bangkok, Thailand | Rubber chemicals |
| Kumpulan Fima Berhad | Malaysia | Kuala Lumpur, Malaysia | Industrial chemicals |
| Petronas Chemicals Derivatives | Malaysia | Kuala Lumpur, Malaysia | Rubber chemicals |
| Malaysian Rubber Board | Malaysia | Kuala Lumpur, Malaysia | Rubber chemicals research |
| Kuala Lumpur Kepong Berhad | Malaysia | Kuala Lumpur, Malaysia | Rubber chemicals |
| YTY Industry Holdings | Malaysia | Selangor, Malaysia | Latex chemicals |
| Riverstone Holdings | Malaysia | Selangor, Malaysia | Rubber additives |
| Dynapack Asia | Malaysia | Selangor, Malaysia | Rubber materials |
| Formosa Chemicals & Fibre Corp | Taiwan | Taipei, Taiwan | Rubber materials |
| Nan Ya Plastics Corporation | Taiwan | Taipei, Taiwan | Chemical intermediates |
| China General Plastics Corporation | Taiwan | Kaohsiung, Taiwan | Rubber materials |
| Eternal Materials Co., Ltd. | Taiwan | Kaohsiung, Taiwan | Rubber additives |
| Oriental Union Chemical Corp | Taiwan | Taipei, Taiwan | Chemical intermediates |
| LCY Elastomers LP (Taiwan Ops) | Taiwan | Taipei, Taiwan | Synthetic rubber |
| Petrochemical Corporation of Singapore | Singapore | Singapore | Rubber materials |
| ExxonMobil Asia Pacific | Singapore | Singapore | Synthetic rubber |
| Shell Eastern Petroleum | Singapore | Singapore | Petrochemicals |
| Mitsui Chemicals Asia Pacific | Singapore | Singapore | Rubber additives |
| Sumitomo Chemical Asia | Singapore | Singapore | Rubber chemicals |
| Evonik (SEA Region) | Singapore | Singapore | Rubber additives |
| BASF South East Asia | Singapore | Singapore | Rubber chemicals |
| Arkema Asia Pacific | Singapore | Singapore | Rubber additives |
| Lanxess Pte Ltd | Singapore | Singapore | Rubber accelerators |
| Clariant South East Asia | Singapore | Singapore | Rubber additives |
| Sabic Asia Pacific | Singapore | Singapore | Petrochemicals |
| Aditya Birla Chemicals Thailand | Thailand | Bangkok, Thailand | Chemical intermediates |
| PT Lotte Chemical Titan | Indonesia | Jakarta, Indonesia | Petrochemicals |
| PT Chandra Asri Petrochemical | Indonesia | Cilegon, Indonesia | Rubber materials |
| PT Pertamina Petrochemical | Indonesia | Jakarta, Indonesia | Petrochemicals |