GB/T 45574-2025 Chinese PDF (GB /T45574-2025) GB/T 20965-2025 GB/T 45319-2025_Chinese: Eucommia ulmoides oliv

GB/T 45319-2025_Chinese: Eucommia ulmoides oliv

GB/T 12789

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/T 20236-2025_Chinese: Accelerated outdoor weathering test methods for nonmetallic materials using concentrated natural sunlight (Chinese: 非金属材料的聚光加速户外暴露试验方法)

English versions: GB/T 45315-2025

GB/T 45574-2025 Chinese PDF (GB /T45574-2025) GB/T 20965-2025 GB/T 45319-2025_Chinese: Eucommia ulmoides olivGB T 45574 2025_Chinese: Data security technology Security requirements for processing of sensitive personal information (Chinese: ) Note Careful: Text of PDF is in Chinese (not English). Delivery (PDF in Chinese): 2 working hours typically, ASAP English versions: GB T 45574 2025