GB 19272-2024 Chinese PDF GB 28050-2025 40-2024_Chinese: Specifications for optical fibre

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)

English versions: GB/T 15972

1 specifications (Chinese: 信息技术 抽象语法记法一（ASN

GB 45549-2025_Chinese: Norm of energy consumption per unit production of graphite and fluorite (Chinese: 石墨和萤石单位产品能源消耗限额)

English versions: GB/T 17591-2025

GB 19272-2024 Chinese PDF GB 28050-2025 40-2024_Chinese: Specifications for optical fibreGB 19272 2024_Chinese: Safety for outdoor body building equipment General requirements (Chinese: ) Note Careful: Text of PDF is in Chinese (not English). Delivery (PDF in Chinese): 2 working hours typically, ASAP English versions: GB 19272 2024