Sludge Treatment, Vessel/Tank Cleaning, Chemical Cleaning (Industrial), Toxic Waste Management, Waste Water Treatment
Petroleum refining.
BP SINGAPORE PTE LTD
CHEVRON SINGAPORE PTE. LTD.
NESTE SINGAPORE PTE LTD
NSL OILCHEM SPECIALTIES PTE LTD
SHELL EASTERN PETROLEUM (PTE) LTD
SINGAPORE PETROLEUM COMPANY LIMITED