...网络是把双刃剑 » Network is double-edged sword 精选原料 » Selection of raw materials 心不在自己身上，什么都是枉然！ » The heart on oneself body, anything is not in vain however!
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Selection of raw materials, coupled with excellent workmanship, reliable product quality.
精选原材料，加上优良的做工，产品质量值得信赖。
The selection of raw materials, characteristics of film forming and production cost are discussed.
讨论了原材料的选择、成膜特点及生产成本。
Selection of raw materials, product formulation, manufacturing technology and technical indexes were presented.
对原材料的选用、生产配方、生产工艺、技术指标等作了介绍。
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