The application of polypropylene in building zone are reviewed, inclusive of pp pipe, pp fiber geotextile, pp fiber concrete and other pp plasticsarticle.
It analyzed the technological characteristics of plasticsarticle of leading paper device of printer, and introduced the structure of injection mould, the gate design, and the work process of mould.
分析了打印机导纸器塑件工艺特点，介绍了注塑模结构、浇口设计方案和模具工作过程。
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An article in the region and a big two nationally renowned for its waste plastics market.