This standard specifies the classification, type and basic dimensions, manufacturing requirements, inspection and testing, marking, packaging, transportation and storage of supporting box components for refrigeration and air-conditioning purification equipment. This standard applies to aluminum alloy frame structural parts, spring shock absorbers, rubber shock absorbers, various door locks, door hinges, door panel nail sets, door panel fixing buttons and door panel buckles, anti-cold bridge sealed access doors, anti-cold bridge seals Design, manufacturing, selection and acceptance of observation windows, frameless cold bridge prevention boxes, filtered water pipe joints, etc.