With high quality fiber and mineral substances as main content, .....      Sinkwang Group can also produce the polystyrene board ....... ith quartz stand, cement reinforced fiber as main raw materials,sinkwang Calcium silic......       With quartz stand, cement reinforced fiber as main raw materials,sinkwang ......     The product is a new heating system ,it is made from Mgo Board and special heat conduction .......     Sinkwang sandwich board can made from several styles......