Link
| ASTM | http://www.astm.org |
| BSI | http://www.bsigroup.com/ |
| The Conservancy Association | http://www.cahk.org.hk |
| Build Up | http://buildhk.hk |
| Mutual Recognition Arrangement for Laboratory | |
| Accreditation | http://www.itc.gov.hk/en/quality/hkas/hoklas/agreement.htm |
| CS1:1990 | http://www.cedd.gov.hk/eng/publications/standards_handbooks_cost/stan_cs1.htm |
| UK Cares | http://www.ukcares.com/ |
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