... steel plate,steel plate 2.Hole:round,lenth,square,others 3.ISO 9001 Certification 4.16 years factory perforated metal meshMaterail:stainless steel ... manufacture, upscale sound heartcover,grain ventilates.perforated metal mesh also can be used in architectural, the road, ... product quality has achieved the national standard Feature: light weight,skid prevention and artisticShape:long square hole, ...