以退役炮弹发射药为原料，全部或部分代替传统的硝基纤维素（NC）应用在硝基漆系列产品中，除产品性能达到原标准外，也大幅降低了生产成本，既......

the so-called art refers to a kind of natural lacquer processing and as material made into art process through the use o......