OBAYASHI CORPORATION (OVERSEAS BUSINESS DIVISION)
OBAYASHI CORPORATION PRIVATE LIMITED
OCS FACILITIES MANAGEMENT SINGAPORE PTE LTD
OHMZ AND ASSOCIATES
Scope:Mechanical and electrical consultancy, green building services and energy auditservices.
OMEGA INNOVATION PTE LTD
Scope:Design, project management, integration, service and maintenance of telecommunication, fire and gas detection and related engineering systems.
OMEGA INTEGRATION PTE LTD
OMNISENSE SYSTEMS PTE LTD
Scope:Design, fabrication, assembly, installation, testing and commissioning, maintenance of electro-optics equipment.
ONE°15 MARINA CLUB
ONG & ONG PTE LTD
Scope:Architectural consultancy and construction supervision services.
ORIGIN EXTERMINATORS PTE LTD