GB/T 18964.2-2025 Chinese PDF (GB /T18964.2-2025) GB/T 20236-2025 English versions: GB/T 17626

English versions: GB/T 17626

measuring or monitoring of protective measures - Part 12: Power metering and monitoring devices(PMD) (Chinese: 交流1000V和直流1500V及以下低压配电系统电气安全 防护措施的试验、测量或监控设备 第12部分：电量测量和监视装置（PMD）)

GB/T 17643-2025_Chinese: Geosynthetics - Polyethylene geomembrane (Chinese: 土工合成材料 聚乙烯土工膜)

English versions: GB/T 20405

GB/T 18964.2-2025 Chinese PDF (GB /T18964.2-2025) GB/T 20236-2025 English versions: GB/T 17626GB T 18964. 2 2025_Chinese: Plastics Impact resistant polystyrene (PS I)moulding and extrusion materials Part 2: Preparation of test specimens and determination of properties (Chinese: PS I 2) Note Careful: Text of PDF is in Chinese (not English). Delivery (PDF in Chinese): 2 working hours typically, ASAP English versions: GB T 18964. 2 2025