Period : 2014/4/24 - 2019/4/25
Certification bodies : Bureau Veritas Industry and Facilities ,Greater Ch
Period : 2019/4/25 - 2021/4/25
Certification bodies : Beijing East Allreach Certification Center Co.,Ltd
Period : 2018/4/4 - 2019/4/25
Certification bodies : TUV Rheinland
