copper powder sintering filter 1.Good quality air filter 2.Competitive price filter 3.Worldwide popular air filter copper powder sintering filter 01: The air filter with high quality02: Specialized production, market-leader03: The air filter use advanced equipment 1.1-100 microns2.Stainless steel,Copper, titanium3.OEM,Non-standard4.mesh powder sintered Material: stainless steel ,copperCategory: ...