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支配工业生产变化的主导力量是什么?市场。当然还有其它因素:新型原材料.政府条例、生产商发明,设计能力等。快餐食品公司为适应市场要求,需要较高包装速度和高阻隔性能的包装材料,材料加工商应尽一切努力满足快餐食品商的需求,特别是快餐食品的货架期、贮存、发放等方面的要求。如果湿气透过包装,快餐食品就不能保鲜,
What is the dominant force that dominates changes in industrial production? Market. Of course, there are other factors: new raw materials, government regulations, inventions by manufacturers, design capabilities and more. In order to meet the market demand, fast food companies need packaging materials with high packaging speed and high barrier performance. Material processors should make every effort to meet the needs of fast food suppliers, especially for the shelf life, storage and distribution of fast food products . If the moisture through the packaging, fast food can not be kept fresh,