... special-shaped brushes.Materials for brushes: PA, PBT, PE, PP, PVC, steel wire, copper wire, arenga engleri, horsehair and various animal ... .Wire diameters of materials: For PA, PBT, PE, PP and PVC the maximum diameter is 1.2mm; for copper and steel ... sheet, galvanized sheet, aluminum alloy, nylon sheet, pp board, pvc board, wood and so on.Brush hair materials: Copper wire, steel wire ...