... . UL 94 HF-1, UL900 class 2 Pre Polyurethane Foam Panel Air Filters manufacturer taking the leading position in China : Products ... -1, UL900 class 2,ISO 9001:2008,OHSAS 18001:2007FinishingBlack oxide coating or follow customer's demandApplicationIndustrial,medical,telecom,electronics,networking ...