GB/T 15268-2024 Chinese PDF (GB /T15268-2024) GB 31604.31-2025 GB/T 15604-2024_Chinese: Terminology for dust

GB/T 15604-2024_Chinese: Terminology for dust explosion prevention and protection (Chinese: 粉尘防爆术语)

and the use of cast irons (Chinese: 石油天然气工业 油气开采中用于含硫化氢环境的材料 第2部分：抗开裂碳钢、低合金钢和铸铁)

English versions: GB 4824-2025

GB/T 20725-2025_Chinese: Microbeam analysis - Electron probe microanalysis - Guidelines for qualitative point analysis by wavelength dispersive X-ray spectrometry (Chinese: 微束分析 电子探针显微分析 波谱法定性点分析导则)

power supply units and combinations thereof - Part 2: Particular requirements and tests for separating transformers and power supply units incorporating separating transformers for general applications (Chinese: 变压器、电抗器、电源装置及其组合的安全 第2部分：一般用途分离变压器和内装分离变压器的电源装置的特殊要求和试验)

GB/T 15268-2024 Chinese PDF (GB /T15268-2024) GB 31604.31-2025 GB/T 15604-2024_Chinese: Terminology for dustGB T 15268 2024_Chinese: Mulberry silkworm fresh cocoons (Chinese: ) Note Careful: Text of PDF is in Chinese (not English). Delivery (PDF in Chinese): 2 working hours typically, ASAP English versions: GB T 15268 2024