This standard specifies the specifications, classification, requirements, test methods, inspection rules, marking, packaging, tran

This standard is formulated in accordance with the provisions of GB/T 1.3-1997 "Guidelines for Standardization Work Unit 1: Rules

This standard specifies the technical requirements, test methods, inspection rules, installation and acceptance specifications, as

This standard specifies the technical requirements, test methods, inspection rules and marking, packaging and storage requirements

This standard specifies the scope of application, terms and definitions, classification and marking, technical requirements, test

This standard specifies the product model and structure, requirements and test methods of residential automatic meter reading syst

This standard specifies the structure, model, requirements, test methods, inspection rules, marking, packaging, transportation and

This standard specifies the symbols and abbreviations, requirements, test methods, inspection rules, marking, packaging, transport