Standard: Intertek Number: 2302090025HF-001 Issue Date: 2023-02-14 Scope/Range: CO-EXTRUSION WPC DECKING Issued By: Intertek Testing Services Shenzhen Ltd. Shanghai Fengxian Branch

Standard: EN 14041:2004/AC:2006 Number: IT1604/CN203/1806 Issue Date: 2020-03-22 Scope/Range: Wood plastic composite products Issued By: ISET S.r.l.

Standard: Forest Stewardship Council® Chain of Custody Standard Number: 023509 Issue Date: 2026-01-16 Scope/Range: Product Type: Wood-plastic composites W9.11. Claims: FSC 100%/FSC Mix/FSC Recycled System(s) used: Transfer System Type: Single Issued By: SAI Global Certification Services Pty Ltd.

Standard: GB/T19001-2016/ISO9001:2015 Number: 65323Q10010R0S Issue Date: 2023-01-18 Scope/Range: Manufacturing of new plastic wood materials, aluminum alloy doors and Windows, plastic steel doors and Windows, scrapers, garden Issued By: ZBXY Certification (Beijing) Co., Ltd