Period : 2018/11/19 - 2021/11/18
Certification bodies : STATE ADMINISTRATION OF WORK SAFETY
Period : 2018/1/1 - 2021/12/31
Certification bodies : GUANGZHOU VKAN CERTIFICATION&TESTING CO.,LTD.
Period : 2018/1/1 - 2020/12/31
Period : 2018/4/14 - 2021/4/13
Certification bodies : GUANGZHOU VKAN CERTIFICATION&TESTING CO .,LTD.