| ABB
Lummus B.V |
| Air
Liquide Process & Construction Inc |
| Air
Products PLC |
| Alstom
Power Asia Pacific Sdn. Bhd |
| Amoco
Chemical (Malaysia) Sdn Bhd |
| Apecs
Offshore Pte. Ltd. |
| Applicot
Corporation |
| Basf
Petronas Chemicals Sdn. Bhd. |
| Bechtel
International, Inc. |
| BP
chemicals (Malaysia) Sdn. Bhd. |
| Bredero
Price (Malaysia) Sdn. Bhd. |
| Brunei
Shell Petroleum Co Sdn Bhd |
| Chemetics |
| Chevron
Oronite Pte Ltd |
| CHIYODA
CORPORATION |
| Chiyoda
Singapore (Pte) Limited |
| CTCI
Corporation |
| Daelim
(Malaysia) Sdn Bhd. |
| Dialog
Catalyst Services Sdn. Bhd |
| Doosan
Heavy Industries & Construction Co Ltd. |
| Dovechem
Chemical Industries (Kuantan) Sdn. Bhd. |
| Dyna-Mac
Engineering Services Pte Ltd |
| Eastman
Chemical (Malaysia) Sdn. Bhd |
| Equator
Engineering Sdn. Bhd |
| Esso
Production Malaysia Inc. |
| Esterol
Sdn. Bhd |
| Ethylene
Malaysia Sdn Bhd |
| Exxon
Engineering Asia Pacific |
| Fentek
(Asia) Pte Ltd |
| Flexsys
Chemicals (M) Sdn Bhd |
| Foster
Wheeler (Malaysia) Sdn Bhd |
| Hamon
(Asia) |
| Henkel
Oleochemicals (Malaysia) Sdn Bhd |
| Hexagon
Tower Sdn. Bhd |
| Hitachi
Plant Engineering & Construction Co Ltd |
| HL
Engineering (M) Sdn. Bhd |
| Howmar
International Limited |
| IHC
Gusto Engineering B.V |
| JGC
Corporation |
| JGC
Singapore Pte Ltd |
| JJ-Lurgi
Engineering Sdn Bhd |
| Jord
International Pte Limited |
| Kaneka
Engineering (M) Sdn Bhd |
| Kuriyama-Ohji
(S) Pte Ltd |
| Kvaerner
-Dialog |
| Kvaerner
Petrominco Engineering Sdn Bhd |
| Kvaerner
Process Systems Asia Pacific Sdn Bhd |
| Kvaerner
Pulping AB |