Weifang Shihua Chemical Building Material Co., Ltd.

Standard: ISO9001 Number: 0762501484R2S-SD/002 Issue Date: 2025-06-30 Expiry Date: 2028-07-04 Scope/Range: Production and sales of building waterproofing membranes Issued By: Beijing ZhongRunXing Certification Co., Ltd.

Standard: ISO45001 Number: 07626S00711R301 Issue Date: 2026-07-20 Expiry Date: 2029-07-19 Scope/Range: Production and sales of building waterproofing membranes and its relative established occupational health and safety management Issued By: Beijing ZhongRunXing Certification Co., Ltd.

Standard: ISO14001 Number: 07626E00808R301 Issue Date: 2026-07-20 Expiry Date: 2029-07-19 Scope/Range: Production and sales of building waterproofing membranes and its relative environment management activity Issued By: Beijing ZhongRunXing Certification Co.,Ltd.

Standard: Official Translation：China Green Building Product Certification Certificate Polymer Waterproof Membrane (Plastic Type) Number: 33926GBM00200R0 Issue Date: 2026-07-20 Expiry Date: 2031-07-19 Scope/Range: Polyethylene Polypropylene Composite Waterproof Membrane、Pre-laid Waterproof Membrane Issued By: Zhongqi Huaxin Certification Center Co., Ltd.

Standard: Official Translation：China Green Building Product Certification Certificate Polymer Waterproof Membrane (Plastic Type) Number: 33926GBM00200R0 Issue Date: 2026-07-20 Expiry Date: 2031-07-19 Scope/Range: Polyethylene Polypropylene Composite Waterproof Membrane、Pre-laid Waterproof Membrane Issued By: Zhongqi Huaxin Certification Center Co., Ltd.

Standard: Official Translation：China Green Building Product Certification Certificate Asphalt‑based Waterproof Membrane (Reinforced Modif Number: 33926GBM00198R0 Issue Date: 2026-07-20 Expiry Date: 2031-07-19 Scope/Range: Asphalt‑based Waterproof Membrane (Reinforced Modified Type) Issued By: Zhongqi Huaxin Certification Center Co., Ltd.

Standard: Official Translation：China Green Building Product Certification Certificate Asphalt‑based Waterproof Membrane (Reinforced Modifi Number: 33926GBM00198R0 Issue Date: 2026-07-20 Expiry Date: 2031-07-19 Scope/Range: Asphalt‑based Waterproof Membrane (Reinforced Modified Type) Issued By: Zhongqi Huaxin Certification Center Co., Ltd.

Standard: Official Translation：China Green Building Product Certification Certificate Asphalt‑based Waterproof Membrane (Non‑reinforced Mo Number: 33926GBM00199R0 Issue Date: 2026-07-20 Expiry Date: 2031-07-19 Scope/Range: Asphalt‑based Waterproof Membrane (Non‑reinforced Modified Type) Issued By: Zhongqi Huaxin Certification Center Co., Ltd.

Standard: Official Translation：China Green Building Product Certification Certificate Asphalt‑based Waterproof Membrane (Non‑reinforced Mo Number: Official Translation：China Green Building Product Certification Certificate Issue Date: 2026-07-20 Expiry Date: 2031-07-19 Scope/Range: Asphalt‑based Waterproof Membrane (Non‑reinforced Modified Type) Issued By: Zhongqi Huaxin Certification Center Co., Ltd.

Standard: Official Translation：China Green Building Product Certification Certificate Water‑based Waterproof Coating Number: 33926GBM00125R0-1 Issue Date: 2026-07-20 Expiry Date: 2031-07-19 Scope/Range: Water‑based Waterproof Coating Issued By: Zhongqi Huaxin Certification Center Co., Ltd.

Standard: Official Translation：China Green Building Product Certification Certificate Water‑based Waterproof Coating Number: 33926GBM00125R0-1 Issue Date: 2026-07-20 Expiry Date: 2031-07-19 Scope/Range: Water‑based Waterproof Coating Issued By: Zhongqi Huaxin Certification Center Co., Ltd.