以下为句子列表：
英文: At present, the Heavy calcium carbonate is mainly used in the primary products with the general granularity about 400 items and the low added value.
中文: 目前我国重质碳酸钙的应用还主要是初级产品，一般粒度在400目左右，附加值低。
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英文: The Brief Analysis of Marketing : The superfine Heavy calcium carbonate is vastitude at the industry performance originates and low at the price, which is widely used in plastic, rubber, dope and papermaking.
中文: 市场简要分析：超细重质碳酸钙的工业性能好，来源广、价格低，在塑料、橡胶、涂料、造纸等行业得到广泛的应用。
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