- www.goldbell.com.sg
- 8 Tuas Avenue 18, Singapore 638892
- www.env-solutions.com
- 101 Tuas South Avenue 2, Singapore 637226
- www.engro-global.com
- 29 International Business Park, #08-05/06 Acer Building, Singapore 609923
- www.enerprof.com.sg
- 48 Toh Guan Road East, #08-107, Enterprise Hub, Singapore 608586
- www.elms.com
- 10 Tuas View Square, Singapore 637552
- 5 Tuas Avenue 3, Singapore 639405