铸型尼龙是一种具有很多优点的新材料。石家庄机务段从一九六八年开始,应用铸型尼龙代替部分有色金属机车部件,经过实践,认为性能较好,现已成批生产。但是,在铸型尼龙制做过程中,散发出一些有毒物质,针对这个问题,段党委遵照毛主席“一切从人民的利益出发”的教导, Mold nylon is a new material with many advantages. Shijiazhuang locomotive depot since 1968, the application of cast nylon instead of some non-ferrous metal locomotive components, after practice, that the better performance, is now mass-produced. However, in the process of making mold nylon, some toxic substances are emitted. In response to this question, the Party committee of the Paragraph teaches in accordance with Chairman Mao’s principle of “starting from the interests of the people in all circumstances”