GB/T 15231-2023 Chinese PDF (GB/T15231-2023) GB 5009.31-2025 GB 45672-2025_Chinese: On-board accident emergency

GB 45672-2025_Chinese: On-board accident emergency call system (Chinese: 车载事故紧急呼叫系统)

40-2024_Chinese: Specifications for optical fibre test methods - Part 40: Measurement methods and test procedures for transmission characteristics - Attenuation (Chinese: 光纤试验方法规范 第40部分：传输特性的测量方法和试验程序 衰减)

GB 20997-2024_Chinese: Limits and targets of fuel consumption for light-duty commercial vehicles (Chinese: 轻型商用车辆燃料消耗量限值及评价指标)

windows and curtain walls of buildings (Chinese: 建筑门窗、幕墙用密封胶条)

GB/T 45308-2025_Chinese: Railway applications - Rolling stock - Technical requirements for network time synchronization (Chinese: 轨道交通 机车车辆 网络时间同步技术要求)

GB/T 15231-2023 Chinese PDF (GB/T15231-2023) GB 5009.31-2025 GB 45672-2025_Chinese: On-board accident emergencyGB T 15231 2023_Chinese: Test methods for the properties of glassfibre reinforced cement (Chinese: ) Note Careful: Text of PDF is in Chinese (not English). Delivery (PDF in Chinese): 2 working hours typically, ASAP English versions: GB T 15231 2023