Singapore Telecommunications Limited
31 Exeter Road #05-00 Comcentre Singapore 239732
1800-8383555
+65-6733-3036
Haw Par Properties (S) Pte Ltd
401 Commonwealth Drive #03-03 Haw Par Technocentre Singapore 149698
+65-6337-9102
+65-6336-9232
1 Grange Road #11-01 Orchard Building Singapore 239693
+65-6251-9388
+65-6253-1638