... .high temperature resistant 3.anti-corrosion 4.anti-oxidation PTFE Coated Needle Felt(A) Product performance :smooth,non-adhensive,easy for ... ): a) Continuance: 130. b) Instant: 1608) Surface treatment: Heat singeing, coated (C) Process flows :Willey——Carding-machine——Lapping machine——Prepick machine ...