Standard: Trusted Suppliers Number: YXQYJXKC10MDCG65561 Issue Date: 2020-10-10 Expiry Date: 2023-10-09 Scope/Range: Issued By: Credit Evaluation Institutions

Standard: Quality and trustworthy enterprice Number: YXQYJXKC10MDCG65555 Issue Date: 2020-10-10 Expiry Date: 2023-10-09 Scope/Range: Issued By: Credit Evaluation Institutions

Standard: Patent of utility model Number: ZL202223010535.6 Issue Date: 2023-03-28 Expiry Date: 2033-03-27 Scope/Range: Issued By: China National Intellectual Property Administration

Standard: ISO9001 Number: U919122Q32304RIS Issue Date: 2022-12-19 Expiry Date: 2026-01-02 Scope/Range: Issued By: Beijing Daluhangxing Quality Certification Center Co.,Ltd

Standard: ISO14001 Number: U919122E30957RIS Issue Date: 2022-12-19 Expiry Date: 2026-01-02 Scope/Range: Issued By: Beijing Daluhangxing Quality Certification Center Co.,Ltd

Standard: ISO45001 Number: U919122S30824RIS Issue Date: 2022-12-19 Expiry Date: 2026-01-02 Scope/Range: Issued By: Beijing Daluhangxing Quality Certification Center Co.,Ltd

Standard: CNEX Number: CNEX22.0707X Issue Date: 2022-03-07 Expiry Date: 2027-03-06 Scope/Range: Issued By: CNEX

Standard: Number: Scope/Range: Issued By:

Standard: Hi-Tech Enterprise Number: GR202011004593 Issue Date: 2020-12-02 Expiry Date: 2023-12-01 Scope/Range: Issued By: Beijing Municipal Science&Technology Commission

Standard: Hi-Tech Enterprise Number: GR202011004593 Issue Date: 2020-12-02 Expiry Date: 2023-12-01 Scope/Range: Issued By: Beijing Municipal Science&Technology Commission