北新建材变了，变化那么大，变得那么快，变得有点不认识了。 　　1997年 6月上市时的北新建材，其主业还是单一的纸面石膏板及其配套产品轻钢龙骨，而今天它又拥有了矿棉吸声板、建塑型材、塑料管材管件和高档建筑涂料等众多新产品。 　　这并不是最重要的，最重要的是，北新 North New Building Materials has changed, the change has been so great, it has become so fast, and it has become somewhat unrecognized. When it was listed in June 1997, Beixin Building Materials, whose main business was a single sheet of gypsum board and its accessory products, was made of light steel keel. Today, it also owns mineral wool acoustic panels, plastic profiles, plastic pipe fittings and high-end construction. Coatings and many other new products. This is not the most important, the most important is that Beixin