... 61%punch rate Perforated Mesh1.perforated metal mesh 2.HOLE size:3mm 3.hole distance:4mm 4.61%punch rate plastic thickness ... plate,galvanized plate, PVC plate, cold roll copper, nickelcold steel,Hole pattern:diamond, square, oval, triangle ,cross ,fish scale, rectangle, ... diffident material plate in order to suitable for diffident needs Hole diameter:3-100mm(the hole is 0.5mm and the thickness is0 ...