1.bending resistance is not easy to rust 2.The net surface level off, smooth, strong and durable. Material: low ... resistance is not easy to rust, widely used; The net surface level off, smooth, strong and durable.Types are divided ... etc. Type: ChangFang holes, square hole hole, diamond, round hole, hexagon hole, the cross hole, triangle holes, long round hole hole, the plum flower, long waist holes ...