GB/T 28185-2025 Chinese PDF (GB /T28185-2025) GB 15093-2025 English versions: GB/T 22250-2025

English versions: GB/T 22250-2025

5-2025_Chinese: Uncut finished spectacle lenses - Part 5: Abrasion-resistant of surfaces test methods (Chinese: 眼镜镜片 第5部分：表面耐磨试验方法)

English versions: GB/T 26849-2025

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)

power supply units and combinations thereof - Part 14: Particular requirements and tests for auto-transformers and power supply units incorporating auto-transformers for general applications (Chinese: 变压器、电抗器、电源装置及其组合的安全 第14部分：一般用途自耦变压器和内装自耦变压器的电源装置的特殊要求和试验)

GB/T 28185-2025 Chinese PDF (GB /T28185-2025) GB 15093-2025 English versions: GB/T 22250-2025GB T 28185 2025_Chinese: Heat exchange unit for urban heating (Chinese: ) Note Careful: Text of PDF is in Chinese (not English). Delivery (PDF in Chinese): 2 working hours typically, ASAP English versions: GB T 28185 2025