1.90 micron stainless steel filter screen 2.Mesh count:1--600 3.Material:304,304L,316, ... 4.Aperture:0.022-23.37mm 90 micron stainless steel filter screen 1. Materials: sus304, sus304L, sus310, sus316, sus316L, etc. (8% nickel ... .19662%0.1253000.0280.05745%0.117stainless steel wire mesh quality control: "A" class stainless steel wire mesh storage:wooden box ...