... :0.5-15mm 4.certification ISO9001:2008 Byname:sieving plate,the hole has round ,length,square,scale hole, hexagonal hole.Material ... ,nickel plate and various of nonmetal plate.Characteristics: the surface is smooth ,beautiful,the usage is extensive.Application:used in mine,medicine ... for your reference:packaging: certification:name card: punched metal mesh with green PVC coated