宣化粉末冶金厂是张家口市一个400余人的区属集体企业,1979年转产聚丙稀塑料编织袋。转产后,原料的70%靠计划外议价供应。高价原料加大了产品成本。同时,生产塑料编织袋的厂家逐年增多,市场趋于饱和,产品价格不断下 Xuanhua Powder Metallurgical Plant is a collective enterprise of more than 400 people in Zhangjiakou City. In 1979, it changed its production of polypropylene plastic woven bags. After the conversion, 70% of the raw materials are supplied by bargaining. High-priced raw materials increase product costs. At the same time, the number of manufacturers of plastic woven bags increased year by year, the market became saturated, and product prices continued to drop.