PU tube is the polyurethane tube, sub-tube and hose and transparent tube, etc., the main feature is the tube has excellent soft characteristics, can get the minimum bending radius, quite suitable for the use of small space in the pipe, good toughness, low temperature performance , Good bending resistance, good flexibility, can be transparent, used for low temperature air-conditioning refrigerant pipe, air hydraulic pipe, fluid pipe, water pipe and spring tube. It is mainly made of polyurethane elastomer processing, through extrusion, injection and other processes for production. Production process with the raw materials, products, equipment and different.