| ABSG CONSULTING INC. | S72FC2230F | Buona Vista | 71200 | 1972 |
| AMETEK SINGAPORE PRIVATE LIMITED | 198402402E | Bedok | 70101 | 1984 |
| ANRITSU PTE LTD | 199404567H | Alexandra | 46521 | 1994 |
| APPLUS SINGAPORE PTE. LTD. | 199708215R | Buona Vista | 30110 | 1997 |
| AVANTA GLOBAL PTE. LTD. | 201014905M | Balestier | 85509 | 2010 |
| AWCS TECHNOLOGIES PTE. LTD. | 201306388E | Eunos | 42909 | 2013 |
| BIOFRONTIER TECHNOLOGY PTE. LTD. | 200600012N | Dairy Farm | 71200 | 2006 |
| BRUKER SINGAPORE PTE. LTD. | 199802900R | Buona Vista | 71121 | 1998 |
| BSI GROUP SINGAPORE PTE. LTD. | 199502096N | Boat Quay | 71200 | 1995 |
| BUREAU VERITAS SINGAPORE PTE. LTD. | 200209266D | Buona Vista | 78102 | 2002 |
| CAST LABORATORIES PTE LTD | 198100652N | Boon Lay | 71121 | 1981 |
| DAINAN TECH (S) PTE LTD | 198102767H | Boon Lay | 26513 | 1981 |
| DNV BUSINESS ASSURANCE SINGAPORE PTE. LTD. | 201019738R | Buona Vista | 70201 | 2010 |
| DRPL CORPORATION PTE. LTD. | 201115493M | Alexandra | 71125 | 2011 |
| ELEMENT CONSTRUCTION TESTING (S) PTE. LTD. | 200805959C | Boon Lay | 71200 | 2008 |
| ELEMENT TESTING SERVICES (S) PTE. LTD. | 198004219D | Ang Mo Kio | 71200 | 1980 |
| EUROFINS MECHEM PTE. LTD. | 199706019W | Canberra | 71200 | 1997 |
| FIRST FILTER INTERNATIONAL PTE LTD | 199501425R | MacPherson | 25949 | 1995 |
| FLEXISOLVE TECHNOLOGY PTE LTD | 200000858E | Eunos | 26511 | 2000 |
| GAP INTERNATIONAL SOURCING PTE. LTD. | 198801549E | City Hall | 46100 | 1988 |
| GBAD SERVICES PTE. LTD. | 200513547D | Admiralty | 71200 | 2005 |
| GUARDIAN INDEPENDENT CERTIFICATION PTE. LTD. | 200208777D | Eunos | 71200 | 2002 |
| HULETT CONSTRUCTION (S) PTE. LTD. | 200516354D | Canberra | 41001 | 2005 |
| INSPECTORATE (SINGAPORE) PTE. LTD. | 198302159W | Buona Vista | 71200 | 1983 |
| INTERTEK TESTING SERVICES (SINGAPORE) PTE LTD | 197401138D | Hougang | 71200 | 1974 |
| ISM GLOBAL SOLUTIONS PTE. LTD. | 199600170H | Farrer Park | 71129 | 1996 |
| JEMIX MARINE TECH PTE LTD | 199201570H | Boon Lay | 71200 | 1992 |
| KB ASSOCIATES PTE. LTD. | 200205925W | Pasir Ris | 71200 | 2002 |
| LABTECHNIC TESTING SERVICES PTE. LTD. | 200403004E | Buona Vista | 71200 | 2004 |
| LAPP SINGAPORE PTE. LTD. | 200101142E | Orchard | 46900 | 2001 |
| MAEK CONSULTING PTE. LTD. | 200509055C | Boon Lay | 43909 | 2005 |
| MARITEC PTE. LTD. | 199906554N | Buona Vista | 71200 | 1999 |
| MARKETECH INTEGRATED PTE LTD | 199704796R | Eunos | 71200 | 1997 |
| MECHLINK QUALITY MANAGEMENT PTE. LTD. | 200413320H | Ang Mo Kio | 42301 | 2004 |
| MERIEUX NUTRISCIENCES AQ (SINGAPORE) LAB PTE. LTD. | 200914855H | Hougang | 71200 | 2009 |
| METROHM SINGAPORE PTE LTD | 199608513N | Boon Lay | 71200 | 1996 |
| MOGAS FLOW LAB PTE. LTD. | 200102059R | Boon Lay | 71123 | 2001 |
| OCEAN WAY ENGINEERING/CONSTRUCTION PTE LTD | 199804755W | Boon Lay | 30110 | 1998 |
| PACIFIC-TEC SCIENTIFIC PTE. LTD. | 200704040Z | Eunos | 26511 | 2007 |
| QUALITY ASSURANCE MANAGEMENT ASIA PTE LTD | 200008237M | Ang Mo Kio | 71200 | 2000 |
| R.A.K. MATERIALS CONSULTANTS PTE LTD | 198300817N | Dairy Farm | 71200 | 1983 |
| ROBOTIC WELDING & INSPECTIONS PTE. LTD. | 200009018E | Boon Lay | 71200 | 2000 |
| S.H.I. PLASTICS MACHINERY (S) PTE. LTD. | 198102570R | Alexandra | 46541 | 1981 |
| SA GEOLAB INTERNATIONAL PTE. LTD. | 199305534K | Eunos | 71200 | 1993 |
| SAS PTE. LTD. | 198403314C | Alexandra | 69201 | 1984 |
| SCHNEIDER ELECTRIC SOUTH EAST ASIA (HQ) PTE. LTD. | 197300426M | Balestier | 82999 | 1973 |
| SETSCO SERVICES PTE LTD | 196900269D | Buona Vista | 71200 | 1969 |
| SFI FOOD PTE. LTD. | 197400310D | Changi | 56200 | 1974 |
| SGS TESTING & CONTROL SERVICES SINGAPORE PTE LTD | 199404065N | Boon Lay | 71200 | 1994 |
| SINGAPORE AGARWOOD INSTITUTE PTE. LTD. | 198703797E | East Coast | 71200 | 1987 |
| SOCOTEC CERTIFICATION SINGAPORE PTE. LTD. | 199409508E | Beach Road | 71200 | 1994 |
| SODICK SINGAPORE PTE. LTD. | 199308328C | Eunos | 46900 | 1993 |
| SPECTRA INSTRUMENTS PTE LTD | 199906486Z | MacPherson | 71200 | 1999 |
| TSC TECHNOLOGIES PTE. LTD. | 200204968E | Tanglin | 71200 | 2002 |
| TUV SUD ASIA PACIFIC PTE. LTD. | 199509063W | Boon Lay | 64202 | 1995 |
| TUV SUD PSB PTE. LTD. | 199002667R | Boon Lay | 71200 | 1990 |
| UGENE LABORATORY SERVICES PTE LTD | 199707886G | Canberra | 71200 | 1997 |
| UNITECH PTE. LTD. | 200309209D | Boon Lay | 43210 | 2003 |
| UNITEST INSTRUMENTS PTE. LTD. | 201119141H | Boon Lay | 46541 | 2011 |
| UNIVERSAL TECHNOLOGY CENTRE LLP | T10LL2074L | Chinatown | 71200 | 2010 |
| V L TEST SYSTEMS (FAR EAST) PTE LTD | 199407511H | Admiralty | 46900 | 1994 |
| VICOM LTD | 198100320K | Buona Vista | 95303 | 1981 |
| WEST SQUADRON MARINE SERVICES PTE. LTD. | 200715097N | Boon Lay | 30110 | 2007 |
| WINWALL TECHNOLOGY PTE LTD | 199206958K | Boon Lay | 71200 | 1992 |
| WORLD TREK TESTING & INSPECTIONS PTE. LTD. | 200709644M | Boon Lay | 41001 | 2007 |
| AC TESLA PTE. LTD. Not yet published | 201007221D | Balestier | 41009 | 2010 |
| ACCURA CALSERV PTE. LTD. Not yet published | 200919298G | Buona Vista | 71200 | 2009 |
| ALCHEMIX PTE. LTD. Not yet published | 200310878Z | Boon Lay | 71200 | 2003 |
| CUTECH PROCESS SERVICES PTE. LTD. Not yet published | 200721797H | Boon Lay | 71200 | 2007 |
| ESCT SERVICE & TESTING PTE. LTD. Not yet published | 201009375W | Boon Lay | 43210 | 2010 |
| ESSENTIALS ENGINEERING PTE. LTD. Not yet published | 201000918N | Hougang | 43291 | 2010 |
| FU OU CONSULTING PRIVATE LIMITED Not yet published | 200508809C | Ang Mo Kio | 71200 | 2005 |
| GLOSTREXT TECHNOLOGY (S) PTE. LTD. Not yet published | 200905332R | Boat Quay | 71200 | 2009 |
| KIWA MACHINERY SINGAPORE PTE. LTD. Not yet published | 200501253W | Boat Quay | 46541 | 2005 |
| MICRO PRECISION CALIBRATION PTE. LTD. Not yet published | 201101243R | Ang Mo Kio | 71200 | 2011 |
| PRO-WIRE ENGINEERING PTE. LTD. Not yet published | 201026205C | MacPherson | 71200 | 2010 |
| SOMEHSA MARINE GEOTESTING PTE. LTD. Not yet published | 200609976M | Eunos | 71200 | 2006 |
| SYSTEST PTE. LTD. Not yet published | 200403220R | Ang Mo Kio | 46592 | 2004 |
| ZAGA SERVICES PRIVATE LIMITED Not yet published | 201008343C | Boon Lay | 71200 | 2010 |