GB/T 27030-2025 Chinese PDF (GB /T27030-2025) GB/T 18282.1-2025 GB/T 12385-2025_Chinese: Standard test methods

GB/T 12385-2025_Chinese: Standard test methods for sealability of gaskets for pipe flanges (Chinese: 管法兰用垫片密封性能试验方法)

English versions: GB/T 14896

GB/T 20243

11-2024_Chinese: Electrical safety in low voltage distribution systems up to 1 000 V AC and 1 500 V DC - Equipment for testing

7-2024_Chinese: Methods for chemical analysis of silver - Part 7: Determination of gold and palladium content - Inductively coupled plasma emission spectrometry (Chinese: 银化学分析方法 第7部分：金、钯量的测定 电感耦合等离子体发射光谱法)

GB/T 27030-2025 Chinese PDF (GB /T27030-2025) GB/T 18282.1-2025 GB/T 12385-2025_Chinese: Standard test methodsGB T 27030 2025_Chinese: Conformity assessment General requirements for third party marks of conformity (Chinese: ) Note Careful: Text of PDF is in Chinese (not English). Delivery (PDF in Chinese): 2 working hours typically, ASAP English versions: GB T 27030 2025