一种新型实用的建筑板材——防水保温隔热屋面板在山东省青州市防水保温隔热屋面板厂问世，并投入批量生产，成为建材市场上的抢手货。该产品是以工业废渣为主要原料研制而成的一种建筑节能新产品，具有强度高。防水、防火、保温、隔热、抗震、性能稳定等特点。该产品的原料来? A new type of practical building board, waterproof and heat-insulating roofing panels, was introduced in Qingzhou City, Shandong Province waterproof and heat-insulating roof panel factory, and put into mass production, becoming a popular commodity in the building materials market. The product is a kind of building energy-saving new product developed from industrial waste as the main raw material, with high strength. Waterproof, fireproof, thermal insulation, heat insulation, earthquake resistance, stable performance and other characteristics. The raw material of the product comes from?