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

This standard specifies the performance test methods and requirements for forced flow surface air coolers and air heaters. This st

This standard applies to aerodynamic performance tests of various air supply and return vents. This standard applies to aerodynami