For light industry which is not noisy, the roofing and cladding generally consist of factory-made sheets, of which hundreds of types exist, made of corrugated or toughed or flat steel, plywood, aluminum, or asbestos-cement.

• 对于没有噪音的轻工业来说，屋顶和围护材料一般用工厂制造的薄板，其类型有几百种，有瓦垄形的、槽形的或平薄钢板，胶合板，铝板或石棉水泥板。