Standard: ENVIRONMENTAL MANAGEMENTSYSTEM CERTIFICATE Number: NO,00121E34476R1M/3700 Issue Date: 2018-11-26 Expiry Date: 2024-11-25 Scope/Range: Design, Development and Manufacturing of Rigging Hardware, Forged Metal Parts and ElectrifiedRailway Catenary Components and Rel Issued By: CHINA QUALITY CERTIFICATION CENTRE

Standard: QUALITY MANAGEMENT SYSTEMCERTIFICATE Number: NO,00121Q310584R1M/3700 Issue Date: 2018-10-29 Expiry Date: 2024-10-28 Scope/Range: Design, Development and Manufacturing of Rigging Hardware, Forged Metal Parts and ElectrifiedRailway Catenary Components Issued By: CHINA QUALITY CERTIFICATION CENTRE

Standard: OCCUPATIONAL HEALTH AND SAFETYMANAGEMENT SYSTEM CERTIFICATE Number: No，00121S33347R1M/3700 Issue Date: 2018-11-08 Expiry Date: 2024-11-07 Scope/Range: Design, Development and Manufacturing of Rigging Hardware, Forged Metal Parts and ElectrifiedRailwary Calenary Camponents and Re Issued By: CHINA QUALITY CERTIFICATION CENTRE

Standard: Rated as the 2021 High-end Brand Cultivation Enterprise in Shandong Province Number: 001 Scope/Range: High-end brand cultivation enterprise Issued By: Shandong Provincial Market Supervision Administration

Standard: Awarded as the 2021 Green Supply Chain Management Enterprise by the Ministry of Industry and Information Technology of the Peopl Number: 002 Issue Date: 2022-12-10 Expiry Date: 2023-12-10 Scope/Range: Supply Chain Management Enterprise Issued By: Ministry of Industry and Information Technology of the People's Republic of China

Standard: Awarded as "Patent Examination and Service Training Base" by the Patent Examination Cooperation Tianjin Center of the Patent Off Number: 003 Issue Date: 2022-07-13 Expiry Date: 2025-07-13 Scope/Range: intellectual property Issued By: Patent Office of the State Intellectual Property Office Patent Examination Cooperation Tianjin Center

Standard: Awarded as the 2021 Green Supply Chain Management Enterprise by the Ministry of Industry and Information Technology of the Peopl Number: 005 Issue Date: 2021-12-10 Expiry Date: 2022-12-10 Scope/Range: Green supply chain management system Issued By: Ministry of Industry and Information Technology of the People's Republic of China

Standard: Was rated as the advanced unit of safety production in Jining City, Shandong Province in 2021 Number: 006 Issue Date: 2022-03-01 Expiry Date: 2023-03-01 Scope/Range: advanced unit Issued By: Jining Municipal Committee of the Communist Party of China Jining Municipal People's Government Safety Production Committee

Standard: Jining Municipal Committee of the Communist Party of China Jining Municipal People's Government Safety Production Committee Number: 007 Issue Date: 2019-07-01 Expiry Date: 2020-07-01 Scope/Range: Specialized special "little giant" enterprise Issued By: Ministry of Industry and Information Technology

Standard: General Manager Du Daping was named the 2023 Jining City Federation of Industry and Commerce Excellent Entrepreneur Vice Chairma Number: 009 Issue Date: 2023-02-01 Expiry Date: 2024-02-01 Scope/Range: Outstanding Entrepreneur Issued By: Jining City Federation of Industry and Commerce (General Chamber of Commerce)

Standard: Appraised as the 2018 Shandong Provincial Certified Industrial Design Center by the Shandong Provincial Department of Industry a Number: 011 Issue Date: 2018-11-01 Expiry Date: 2026-11-01 Scope/Range: Industrial Design Center Evaluation Issued By: Department of Industry and Information Technology of Shandong Province