Toll Offshore Petroleum Supply Base, Singapore Toll Offshore Petroleum Supply Base, Singapore Building & Engineering, Industrial, Infrastructure, Ports, Power, Singapore Projects Toll Offshore Petroleum Supply Base, Singapore Building & Engineering, Industrial, Infrastructure, Ports, Power, Singapore Projects admin2024-08-09T17:32:18+08:00 WT provided full Quantity Surveying services for TOPS in the redevelopment of Loyang Offshore Supply Base.