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大的聚合物生产厂家都要散发一些塑料和橡胶方面的技术和商业的消息。当然,这些资料由于它们商业上有利于推销大量商品的需要而会加以渲染。不过,从产品的观点
Large polymer manufacturers have to distribute some technical and commercial news about plastics and rubber. Of course, these materials are being rendered due to their commercial need to sell a large number of products. However, from the product point of view