This standard specifies the terms, definitions and symbols, product classification, requirements, test methods, inspection rules and signs, packaging, transportation and storage of multi-functional movable extension mechanical devices. This standard is applicable to the extension mechanical device installed in multi-functional movable sofas for indoor purposes such as reception, home use, and leis re.
QB/T 4191-2011 Referenced Document
GB/T 2828.1-2003 Sampling procedures for inspection by attributes--Part 1: Sampling schemes indexed by acceptance quality limit(AQL) for lot-by-lot inspection