... scopeMedical, dustproofThe respiration valve deviceNoModel 17.5 * 9.5NameSMS Non-woven masktechniesnon-wovensupply typeMake-to-OrdertypedisposableColor White ect place of originRiZhao ... chemical industry, leather, automobile manufacturing, printing, dyeing, mine environmental sanitation, polishing operation, etc Applicable scope4, construction ยท textile, chemical industry, leather, automobile ...