Standard: Trademark Registration Certificate Number: 50413758 Issue Date: 2021-06-14 Expiry Date: 2031-06-13 Scope/Range: Class 6: Metal partition panels, metal building materials, metal building panels, metal pipes and other metal building hardware Issued By: China National Intellectual Property Administration

Standard: Outstanding Contribution Unit Honor Certificate Number: N/A Issue Date: 2022-12-01 Scope/Range: Honor for contribution to Guangzhou Design Capital project Issued By: Hubei Qingneng Construction Engineering Co., Ltd

Standard: Work Safety Standardization Level‑3 Enterprise Certificate Number: AQB Ⅲ GM20221021 Issue Date: 2022-04-26 Expiry Date: 2025-04-25 Scope/Range: Safety standardized production for metal manufacturing enterprise Issued By: National Work‑Safety Administration

Standard: AAA‑Grade Credit Enterprise Certificate Number: PHZX202101200091 Issue Date: 2021-01-20 Expiry Date: 2024-01-19 Scope/Range: Credit evaluation for metal‑products manufacturing enterprise Issued By: Beijing Puhua Zhengxin International Credit Evaluation Co.,Ltd.

Standard: Credible Entrepreneur Certificate Number: PHZX202101200097 Issue Date: 2021-01-20 Expiry Date: 2024-01-19 Scope/Range: Honor certificate for credible entrepreneur of metal manufacturing enterprise Issued By: Beijing Puhua Zhengxin International Credit Evaluation Co.,Ltd.

Standard: Credible Supplier Certificate Number: PHZX202101200096 Issue Date: 2021-01-20 Expiry Date: 2024-01-19 Scope/Range: Honor for credible supplier of metal‑building‑materials manufacturing Issued By: Beijing Puhua Zhengxin International Credit Evaluation Co.,Ltd.

Standard: Good Faith Demonstration Enterprise Certificate Number: PHZX202101200095 Issue Date: 2021-01-20 Expiry Date: 2024-01-19 Scope/Range: Honor for good‑faith operation of metal manufacturing enterprise Issued By: Beijing Puhua Zhengxin International Credit Evaluation Co.,Ltd.

Standard: AAA‑Grade Quality & Service Integrity Enterprise Certificate Number: PHZX202101200094 Issue Date: 2021-01-20 Expiry Date: 2024-01-19 Scope/Range: Honor for excellent quality and service of metal‑materials manufacturer Issued By: Beijing Puhua Zhengxin International Credit Evaluation Co.,Ltd.

Standard: AAA‑Grade Contract‑Abiding & Credit‑Keeping Enterprise Certificate Number: PHZX202101200093 Issue Date: 2021-01-20 Expiry Date: 2024-01-19 Scope/Range: Honor for contract‑abiding and credit‑keeping of metal manufacturing enterprise Issued By: Beijing Puhua Zhengxin International Credit Evaluation Co.,Ltd.

Standard: Enterprise Trustworthiness Grading Certificate Number: PHZX202101200092 Issue Date: 2021-01-20 Expiry Date: 2024-01-19 Scope/Range: AAA‑grade enterprise credit rating for metal‑products manufacturer Issued By: Beijing Puhua Zhengxin International Credit Evaluation Co.,Ltd.

Standard: Enterprise Credibility Grading Certificate Number: PHZX202101200091 Issue Date: 2021-01-20 Expiry Date: 2024-01-19 Scope/Range: AAA‑grade enterprise credit certificate for metal‑building‑materials manufacturer Issued By: Beijing Puhua Zhengxin International Credit Evaluation Co.,Ltd.