... 3. automatic non-burned roof tile is mainly used for roof waterproof heat insulation and decoration, can ... be widely used in factory ware house shopping mallsone-story house ... . According to , the straw to be used can reached 7 hundred million ton, such as rice straw, ... 3,firmly,4,durable,5,fireproof6,anti-freezing.7,alkali and acid resistant,8,high strong anti ...