GB 30251-2024 Chinese PDF GB/T 33993-2024 GB/T 45112-2024_Chinese: LTE-based vehicular communication

GB/T 45112-2024_Chinese: LTE-based vehicular communication - Technical requirement of security certificate management system (Chinese: 基于LTE的车联网无线通信技术 安全证书管理系统技术要求)

GB/T 20424-2025_Chinese: The specification for limit on harmful element content of the heavy nonferrous metal concentrates products (Chinese: 重有色金属精矿产品中有害元素的限量规范)

English versions: GB/T 22283-2025

GB/T 18822

GB 30251-2024 Chinese PDF GB/T 33993-2024 GB/T 45112-2024_Chinese: LTE-based vehicular communicationGB 30251 2024_Chinese: Norm of energy consumption per unit production of refining and chemical industry (Chinese: ) Note Careful: Text of PDF is in Chinese (not English). Delivery (PDF in Chinese): 2 working hours typically, ASAP English versions: GB 30251 2024