This was already cast as the correct class of product object, so you do not need to cast it yourself.
这时产品对象已经被转换成为了正确的类，所以您不需要自己再次的转换它。
Based on "competitive product design first class of service satisfied first" principle.
本着“精品设计、优质服务、满意第一”的原则。
Our main product was designed to serve the high class of European Market.
其主打产品主要是服务于欧美高端市场。
The main raw material of this product is drawing class polypropylene resin.
本产品使用拉丝级聚丙烯树脂主要原料。
The main raw material of this product is drawing class polypropylene resin.
本产品使用拉丝级聚丙烯树脂主要原料。
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