- Unisorb
  - Kestner
  - Airgenic
  - American UV
  - MK Plastics
  - Calorex
  - Seibu Giken DST
  - Walter Meier
   
KESTNER PARTIAL JOB LIST

Siu Ho Wan STP - Screen House

Siu Ho Wan STP - Dewatering House

Ha Tsuen STP

Sai Wan Ho

Fanling Lot 195

Baptist University

World Trade Centre, Beijing

Cyberport R.C.P.