Quality

Standard: Environmental Protection Number: / Issue Date: 2021-01-06 Scope/Range: / Issued By: Hunan Environmental Governance Industry Association

Standard: Environmental Protection Number: / Issue Date: 2021-06-01 Scope/Range: / Issued By: China Association of Urban Global Sanitation

Standard: Environmental Protection Number: 430120210970-M Issue Date: 2022-05-02 Expiry Date: 2023-03-31 Scope/Range: / Issued By: Chinese Association of Urban Global Sanitation

Standard: Number: 00389 Issue Date: 2021-08-13 Expiry Date: 2022-08-12 Scope/Range: / Issued By: China Geosynthetics Engineering Association

Standard: Patent Certificate Number: ZL202020668523.4 Issue Date: 2021-01-19 Scope/Range: / Issued By: State Intellectual Property Office of the P.R.C

Standard: Patent Certificate Number: ZL201020160558.3 Issue Date: 2021-01-26 Scope/Range: / Issued By: State Intellectual Property Office of the P.R.C

Standard: Patent Certificate Number: ZL201320401254.5 Issue Date: 2015-07-15 Scope/Range: Issued By: State Intellectual Property Office of the P.R.C

Standard: Patent Certificate Number: ZL 201320400777.8 Issue Date: 2014-03-26 Scope/Range: / Issued By: State Intellectual Property Office of the P.R.C

Standard: Patent Certificate Number: ZL201020160595.4 Issue Date: 2010-12-01 Scope/Range: / Issued By: State Intellectual Property Office of the P.R.C

Standard: Safety Production License Number: (湘)JZ安许证字[2018]000752 Issue Date: 2024-05-08 Expiry Date: 2027-05-07 Scope/Range: Construction Issued By: Department of Housing and urban-rural construction of Hunan province

Standard: Qualification Certificate of Construction Enterprise Number: D243336796 Issue Date: 2024-04-22 Expiry Date: 2025-04-18 Scope/Range: / Issued By: Department of Housing and urban-rural construction of Hunan province

Standard: International welder certificate Number: CWT11923 Issue Date: 2024-05-31 Expiry Date: 2029-05-31 Scope/Range: Issued By: The International Association of Geosynthetic Installers Certifies:

Standard: Quality and Service Integrity Unit Certificate Number: GJ2024XY0429118(1-4) Issue Date: 2024-04-29 Expiry Date: 2027-04-28 Scope/Range: Issued By: Beijing Guanjie Speed ​​Credit Management Co., Ltd.

Standard: Patent Certificate Number: ZL201120456651.3 Issue Date: 2012-07-25 Scope/Range: Issued By: State Intellectual Property Office of the P.R.C

Standard: Patent Certificate Number: ZL201220739595.9 Issue Date: 2013-06-26 Scope/Range: Issued By: State Intellectual Property Office of the P.R.C

Standard: Patent Certificate Number: ZL201320400706.8 Issue Date: 2014-03-26 Scope/Range: Issued By: State Intellectual Property Office of the P.R.C

Standard: Certificate of Contract-abiding and Credit-keeping Enterprise Number: GJ2024XY0429118(1-2) Issue Date: 2024-04-29 Expiry Date: 2027-04-28 Scope/Range: Issued By: Beijing Guanjie Speed ​​Credit Management Co., Ltd.

Standard: Credit rating certificate Number: GJ2024XY0429118(1-5) Issue Date: 2024-04-29 Expiry Date: 2027-04-28 Scope/Range: Issued By: Beijing Guanjie Speed ​​Credit Management Co., Ltd.

Standard: Integrity Supplier Grade Certificate Number: GJ2024XY0429118(1-7) Issue Date: 2024-04-29 Expiry Date: 2027-04-28 Scope/Range: Issued By: Beijing Guanjie Speed ​​Credit Management Co., Ltd.

Standard: Industry Integrity Unit Grade Certificate Number: GJ2024XY0429118(1-6) Issue Date: 2024-04-29 Expiry Date: 2027-04-28 Scope/Range: Issued By: Beijing Guanjie Speed ​​Credit Management Co., Ltd.