Shanghai D.A.S. Certification Co., Ltd. supervises the board of trustee by China's national authentication (CNCA) subcontracting Britain UKAS/DAS authentication of Sino-foreign joint venture authentication organization (sanctions number CNCA-RF- 2003- 3 ) that sanctions. British imperial family approves of committee UKAS The approval that (United Kingdom Accreditation Service ) indicates that gets unanimous approval of more than 100 countries in the world, the approval marks with UKAS imperial crown sign and authentication certificates are global quality , authority , prestige and successful symbol . Britain DAS authentication Co., Ltd. is that UKAS is sanctioned and affiliated international famous authentication organization, set up the branch in more than ten countries , such as China , Poland , Korea S. , Greece , France , U.S.A. , Turkey , Canada , Thailand , India , Japan , Australia ,etc., can offer the sincerity , authority , science , effective international authentication service to global customer .