GB/T 5019.5-2023 Chinese PDF (GB/T5019.5-2023) GB/T 22369-2024 GB/T 45649-2025_Chinese: Technical guidelines for

GB/T 45649-2025_Chinese: Technical guidelines for the application of coaxial turbine units in metallurgical waste heat and pressure energy recovery (Chinese: 冶金余热余压能量回收同轴机组应用技术指南)

1-2024_Chinese: Photobiological safety of non-coherent light products - Part 1: General requirements (Chinese: 非相干光产品的光生物安全 第1部分：通用要求)

GB/T 30894-2024_Chinese: Salted fish (Chinese: 咸鱼)

2-2024_Chinese: Cybersecurity technology - Entity authentication - Part 2: Mechanisms using authenticated encryption (Chinese: 网络安全技术 实体鉴别 第2部分：采用鉴别式加密的机制)

English versions: GB/T 42093

GB/T 5019.5-2023 Chinese PDF (GB/T5019.5-2023) GB/T 22369-2024 GB/T 45649-2025_Chinese: Technical guidelines forGB T 5019. 5 2023_Chinese: Insulating materials based on mica Part 5: Rigid mica materials for heating equipment (Chinese: 5) Note Careful: Text of PDF is in Chinese (not English). Delivery (PDF in Chinese): 2 working hours typically, ASAP English versions: GB T 5019. 5 2023