1 Aker Engineering Malaysia Sdn Bhd
2 MMC Oil & Gas Engineering Sdn Bhd
3 Protek Engineers
4 Ranhill Worley
5 T.EN Consultant (M) Sdn. Bhd. (formerly known as Technip Consultant (M) Sdn. Bhd.)
6 Blackstone E&C Sdn Bhd
7 Cekap Technical Services Sdn Bhd
8 Environmental Resources Management (M) Sdn Bhd
9 Enserv Sdn Bhd
10 Emerson Process Management (M) Sdn Bhd
11 Innovative Fluid Process Sdn Bhd
12 MECIP Global Engineers Sdn Bhd
13 Minconsult Sdn Bhd
14 Malaysia Marine & Heavy Engineering Sdn Bhd
15 Peritus International Sdn Bhd
16 RNZ Integrated (M) Sdn Bhd
17 Synergy Oil & Gas Engineering Sdn Bhd
18 Toyo Engineering & Construction Sdn Bhd
19 Winmore Engineering Sdn Bhd
20 WEG South East Asia Sdn Bhd (Formerly known as Watt Euro-Drive (M) Sdn Bhd)
21 Water Engineering Technology Sdn Bhd
22 Fluor Daniel International (M) Sdn Bhd
23 ICE WOOD Sdn. Bhd. (Formerly known as Wood Group Engineering Sdn Bhd)  
24 IGL Services Sdn Bhd
25 Tanjung Offshore Services Sdn Bhd
26 Elektro Serve (M) Sdn Bhd
29 Maju Integrated Engineers Sdn Bhd
30 Tenbex Engineering Sdn Bhd