GB 24550-2024 Chinese PDF GB 31648-2025 GB/T 45653-2025_Chinese: Specification for after-sales

GB/T 45653-2025_Chinese: Specification for after-sales service of new energy vehicle (Chinese: 新能源汽车售后服务规范)

1-2024_Chinese: Mechanical structures for electrical and electronic equipment - Outdoor enclosures - Part 1: Design guidelines (Chinese: 电气和电子设备机械结构 户外机壳 第1部分：设计导则)

GB/T 45346-2025_Chinese: Information technology - Technical requirements for graph database management system (Chinese: 信息技术 图数据库管理系统技术要求)

GB/T 20854-2025_Chinese: Corrosion of metals and alloys - Accelerated testing involving cyclic exposure to salt mist

English versions: GB 39752-2024

GB 24550-2024 Chinese PDF GB 31648-2025 GB/T 45653-2025_Chinese: Specification for after-salesGB 24550 2024_Chinese: Protection of motor vehicle for pedestrians in the event of a collision (Chinese: ) Note Careful: Text of PDF is in Chinese (not English). Delivery (PDF in Chinese): 2 working hours typically, ASAP English versions: GB 24550 2024