Linyi Weicheng Metal Products Co.,Ltd also produces plaster boards of high quality ,as they are made of gypsum powder of high natrual purity mixed with glass fiber ,starch, then paper-faced, beacause their light weight ,convenient for construction, no harm to human being and envoironmental-protective, they have been worldwidely popular ,we have exported to Middle East, America ,Europe and Asia, so many countries in the world.