ONFOUR is a Singapore company.
VERTEX, 33 UBI AVENUE 3, Postal 408868, #08-71
ALPHA BUILDING, 45 KALLANG PUDDING ROAD, Postal 349317, #09-08
AUTOBAY @ KAKI BUKIT, 1 KAKI BUKIT AVENUE 6, Postal 417883, #02-12
411 HOUGANG AVENUE 10, Postal 530411, #07-1006
217A JURONG EAST STREET 21, Postal 601217, #01-589
68 CIRCULAR ROAD, Postal 049422, #02-01
T-SPACE, 1 TAMPINES NORTH DRIVE 1, Postal 528559, #06-08
NORTHSTAR @ AMK, 7030 ANG MO KIO AVENUE 5, Postal 569880, #08-06
KING GEORGE'S BUILDING, 340 KING GEORGE'S AVENUE, Postal 208574
43 TUAS VIEW CIRCUIT, Postal 637360