2015.12    certified by ISO9001:2008:ISO14001:2004 in Beijing

2012.10    get the ISO9001:2008:ISO14001:2004 certification of SGS company

2009.10    successfully passed the ISO9001:2008 certification of WIT company.

2007.03    get WIT's ISO14001:2004 version of the environmental system certification.

2006.12    implement the ISO1400 environment management system

2006.12    TUV company ISO9001:2000 version quality management system certification