| 1981 | Helmsion Engineering Pte. Ltd. 199303387E | Active |
| 1982 | H & W Communications Pte Ltd 199700014E | Active |
| 1983 | Hwa Sheng Construction Pte Ltd 199307695E | Active |
| 1984 | Hock Chuan Hong Waste Management Pte Ltd 199305775C | Active |
| 1985 | Hys Enterprises Pte Ltd 199104660R | Active |
| 1986 | Hong Lai Huat International Pte. Ltd. 199202793M | Active |
| 1987 | Hang Hong Contractor Pte Ltd 199801534D | Active |
| 1988 | Hoe Hock Electrical Engineering Pte Ltd 199105194C | Active |
| 1989 | Huat Builders Pte Ltd 199304622N | Active |
| 1990 | Heng Hong Development Pte Ltd 199300314N | Active |
| 1991 | Hi Light Electrical Pte Ltd 198804257C | Active |
| 1992 | Hap Hong Huat Pte. Ltd. 199103340K | Active |
| 1993 | Hoong Fung Engineering Pte Ltd 199202790Z | Active |
| 1994 | Hongfa Sand & Granite Pte Ltd 199605365C | Active |
| 1995 | Hec Electrical & Construction Pte Ltd 199501306G | Active |
| 1996 | Hoo Huat Engineering Pte. Ltd. 199106131H | Active |
| 1997 | Hiap Yew Electrical Pte Ltd 199703479D | Active |
| 1998 | Ho Seng Engineering Works Pte Ltd 199406825M | Active |
| 1999 | Hoe Hong Huat Construction Pte Ltd 199204104N | Active |
| 2000 | Heng Fa Holdings Pte. Ltd. 198905534G | Active |
| 2001 | Hak Long Engineering Pte Ltd 198500346R | Active |
| 2002 | High Weigh Enterprise Construction (pte.) Ltd. 200919471N | Active |
| 2003 | Hardy House Prefab (singapore) Pte Ltd 198501217K | Active |
| 2004 | Hi Tech (impex) Amusement Trading & Services 52927834X | Active |
| 2005 | Hg Metal Manufacturing Limited 198802660D | Active |
| 2006 | Hoong Kong Electric Company Private Limited 197501313R | Active |
| 2007 | Hai Leng Contract Pte Ltd 198800129E | Active |
| 2008 | Heng Gek Sai Enterprise Pte Ltd 199802431M | Active |
| 2009 | Hiap Shing Construction Pte. Ltd. 197600298E | Active |
| 2010 | Hua Mei Fang Trading 52924273K | Active |