Professional Service Integrators (S) Pte Ltd
20 Upper Circular Road #03-01/05 THE RIVERWALK Singapore 058416
+65-6536-1728
+65-6535-2971
138 Robinson Road #07-03 THE CORPORATE OFFICE Singapore 068906
+65-6324-9293
+65-6324-9289
N.H.Z. System Engineering Company (S) Pte. Ltd.
5 Shenton Way #02-01 UIC BUILDING Singapore 068808
+65-6221-1272
+65-6221-1475