GB/T 45617-2025 Chinese PDF (GB /T45617-2025) GB/T 18281.3-2024 31-2025_Chinese: National food safety standard

31-2025_Chinese: National food safety standard - Food contact materials and products - Determination of residual and migration of vinyl chloride

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)

English versions: GB 21257-2024

English versions: YY/T 1950-2024

GB/T 45629

GB/T 45617-2025 Chinese PDF (GB /T45617-2025) GB/T 18281.3-2024 31-2025_Chinese: National food safety standardGB T 45617 2025_Chinese: Specification for international trade business process Animal traceability data exchange (Chinese: ) Note Careful: Text of PDF is in Chinese (not English). Delivery (PDF in Chinese): 2 working hours typically, ASAP English versions: GB T 45617 2025