加拿大外贸
This generally needs zinc oxide to be used as a filler in the compound. It needs to be a special grade zinc oxide known as 100% pure – otherwise the compound appears two tone in colour grey/white plus during manufacture there will be many rejects which in the rubber industry are known as “hot tears”. The problem is 100% pure zinc oxide is expensive.评论
一般混合物中需要使用氧化锌，而且需要100%纯度的氧化锌，否者混合物的颜色会太灰/白，而且生产过程中会有很多不合格品。一般橡胶也称为热裂纹。问题是100%纯氧化锌很贵。
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