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This standard specifies the classification, technical requirements and test methods of aluminum alloy die castings for sewing mach
This standard specifies the technical specifications of steel paper base paper. This standard applies to base paper specially used
This standard specifies the product classification, technical requirements, test methods, inspection rules and marking, packaging,
This standard specifies the product classification, technical requirements, test methods, inspection rules and marking, packaging,
This standard specifies the technical requirements, test methods, inspection rules and marking, packaging, transportation and stor
The standard measurement method for the temperature rise of lamp caps described in this standard is applicable to the detection of
This standard specifies the product classification, technical requirements, test methods, inspection rules, marking, packaging, tr
This standard specifies the definition, classification, requirements, test methods, inspection rules and marking, packaging, trans