- www.leeenghuat.com
- 38 Joo Koon Circle, Singapore 629063
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- 24 Tuas Avenue 2, Singapore 639455
- www.klresources.com.sg
- 40 Loyang Drive, Singapore 508961
- www.klenviro.com
- 19 Sungei Kadut Loop, Singapore 729462
- www.keppelseghers.com
- 1 Harbourfront Avenue, Keppel Bay Tower #05-05, Singapore 098632
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- 6 Tuas South Street 8, Singapore 637003