In 2005, Diann Bao Inc. was certified by BVQI for standard ISO 9001:2000, the certificate No. is 174684. In order to pursue higher quality control , Diann Bao Inc. has changed the certification body into TUV Rheinland Group in 2008. The certificate No. is 01 100 822 085169 and the ID No. is 9105047025.