Polyurethane hard foam plastic has tenacious and sturdy surface and low density core.It is widely applied synthetic material and can be used to manufacture decorative materials, furture, office appliances,sports apparatus, namely, computer housing, TV set casing, sledge, mirror frame, sun blind, chair support, hand barrow, furniture decoration stripe, car trunk cover, hard cover for truck cargo box, trailor side board etc. Some of these products are reforced by fiberglass, and called foam plastic with stronger structure.