| Obayashi Corporation | Repair cracks and water leakage on tunnel wall and soffit for Tuas Immersed Tunnel Project | Oct 1997 - Nov 1999 | |
| Hock Guan Cheong Builders Pte Ltd | Repair water leakage on soffit and beams for Toa Payoh and Jurong West HDB Project | Jan 1998 - Jan 1999 | |
| NLC Construction Pte Ltd | Repair spalling concrete, water leakage, coring of beams and installation of Mechanical Expansion Joints for Paragon and Causeway Point Project | Feb 1998 - Jan 1999 | |
| NLC Construction Pte Ltd | Repair water leakage to Fountain Wall at Valley Point Project | May 1998 - Jun 1998 | |
| Sato Kogyo Co. Ltd | Repair cracks on soffit for Esplanade Project | Dec 1998 - Nov 1999 | |
| Lum Chang Building Contractor Pte Ltd | Repair cracks on soffit and beams, and repair water leakage on Diaphragm wall for 7 Draycott Drive Project | Jan 1999 - Dec 2000 | |
| Kumagai-Sembcorp J.V | Repair water leakage on construction joints and cracks on walls and slabs for Changi Airport Station MRT CAL C504 Project | Mar 1999 - Mar 2002 | |
| Nishimatsu Construction Co. Ltd | Repair cracks on external tunnel walls using Unifor Crack Injection System for MRT CAL C503 Project | Mar 1999 - Dec 2001 | |
| Shimizu-Dillingham-Koh Brothers J.V. | Repair water leakage on cracks, construction joint & honeycomb for Outram Park Station MRT NEL C710 Project | Mar 1999 - Aug 2004 | |
| Shimizu Corporation | Repair cracks using Unifor Crack Injection System for Ardmore Park Condominium Project | May 1999 - Feb 2001 | |
| PowerGrid | Repair water leakage to Immersed Cable Tunnel at Pandan/Seraya Project | Jun 1999 - Jul 1999 | |
| Sato Kogyo-Hock Lian Seng J.V | Repair cracks on external walls using Unifor Crack Injection System for BuangKok & SengKang MRT NEL C702 and Punggol MRT NEL C712 Project | Jul 1999 - Dec 2001 | |
| Nishimatsu Construction Co., Ltd | Repair of cracks, spalling concrete and water leakage for Clarke Quay Station (Tunnel) MRT NEL C708 Project | Jul 1999 - Dec 2001 | |
| Kumagai-Sembawang-Mitsui J.V. | Repair water leakage on cracks for Boon Keng & Potong Pasir Stations for MRT NEL C705 Project | Sep 1999 - Jul 2004 | |
| Low Keng Huat (Singapore) Ltd | Install Mechanical Expansion Joint for Thomson Road Novena Square Project | Sep 1999 - Nov 2001 | |
| Hyundai Engineering & Construction Co., Ltd | Repair water leakage on cracks, construction joint & tie rod for Kandang Kerbau & Farrer Park Station MRT NEL C706 Project | Nov 1999 - Jan 2004 | |
| Gammon-Econ J.V. | Install Injecto Tube, repair dry cracks & water leakage for Chinatown Station MRT NEL C709 Project | Dec 1999 - Sep 2002 | |
| Gammon Pte Ltd | Repair water leakage on cracks, construction joint & tie rod for Chinatown Station MRT NEL C709 Project | Feb 2000 - Dec 2001 | |
| Chew Eu Hock Construction Co. (Pte) Ltd | Repair of water leakage, cracks, honeycomb and pressure grouting for N3C13 SengKang Project | Mar 2000 - Dec 2000 | |
| Econ Piling Pte Ltd | Repair water leakage and pressure grout honeycomb on R.C. wall for Chinatown Station MRT NEL C709 Project | Mar 2000 - Aug 2000 | |
| NLC Construction Pte Ltd | Repair water leakage & dry cracks at Clarke Quay Station MRT NEL C708 Project | Jul 2000 - Jun 2002 | Wee Poh Construction Co. (Pte) Ltd | Repair water leakage on construction joints, soffit/wall cracks for Jurong Island Project | Jul 2000 - Oct 2000 |
| Lum Chang Building Contractors Pte Ltd | Grout water leakage on conduct pipe for Melrose Condominium Project | Aug 2000 - Dec 2000 | |
| Sato Kogyo Co., Ltd | Pressure grout honeycomb and gap on beam, soffit and column/wall for City Harvest Church Project | Sep 2000 - May 2001 | |
| Ken Pal (S) Pte Ltd | Repair water leakage on cracks, and grout hollow plaster on slab for Jurong West H.D.B. N6C5 Project | Sep 2000 - Jun 2001 |