Non-powered filtering respirators for escape; (HS: 9020); (ICS: 13.340.30)
National Standard of the P.R.C., Respiratory protection—Non-powered filtering respirators for escape (15 page(s), in Chinese)
This standard specifies the classification, levels, technical requirements, test methods, marking and packaging of non-powered filtering respirators for escape. This document applies to disposable respirators used to protect against toxic gases, vapors and particulates during escape.