1. QUACERT - Việt Nam                http://www.quacert.gov.vn/

2. DNV - Na Uy                            http:// www.dnv.com

3. ITS - Hoa Kỳ                            http://www.itertek-sc.com

4. BVQI- Anh Quốc                      http://www.bvqi.com

5. SGS - Thuỵ Sỹ                         http://www.sgs.com

6. TUV - CHLB Đức                       http://www.tuv.com

7. DAS - Anh Quốc                       http://www.das.com.vn

8. AFAQ- Pháp                             http://www.afaq.com

9. PSP - Singgapore                      http://www.psp.com

10. QMS - Úc                               http://www.qms.com/

11. GLOBAL - Anh Quốc                http://www.globalcertification.com/