明升m88备用_滑石块

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明升m88备用_本公司生产的滑石块有特、一、二、三、四级滑石块和滑石小粒,白度90-96% SIO2:40-63%MGO:30% FE2O3:0.3%包装:吨袋或散装希望有需用的客户与我联系

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