... 3.OEM,Non-standard 4.mesh powder sintered Sintering Copper Power Filter Material: stainless steel ,copperCategory: stainless steel powder sintering, stainless steel ... exhaust throttle BESLD, copper / stainless steel sintered ( filter, cartridge, filter tube, filter, filter), porous sintered filter material. HENGKO Filter adopt stainless steel powder, bronze powder or ...