PU is Polyurethane abbreviation, the Chinese called Polyurethane referred to as Polyurethane. Because, simply modify the formula, can get different density, elasticity, rigidity and other physical properties. At present, has a large number of alternative to glass fiber insulation materials, timber, traditional rubber products such as widely used. Circular band generally divided into smooth round belt and coarse surface round belt: circular band to orange, circular thick with dark green. The specifications of the PU round belt from 2 ~ 30 30 are 30 production; Light surface finish is good, bright color, thick with rough surface, uniform grain and tidy, feel comfortable, wide application scope. Tags: three guinness triangle toothed triangle triangle agent