... 5.fliters,protection Round hole perforated metal1,Feature:Perforated Metal with various designs with good permeability and decorative effects. ... plate and others Composites.4,The Characteristic of Perforated Metal: Can be readily formed Exact size Can be painted ... , medicine, filtering, breeding, battery, mechanical protecting, making the crafts, the meshes for the high-grade sound box, decoration, the ...