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If you are willing to wholesale quality,Website:http://www.chalcochem.com, advanced and durable calcined a- alumina from one of the famous China a-c-30,a-c-30-a, various abrasives, abrasive tools and fillers, electronic components manufacturers, CHALCO is always at your service.Using high quality raw materials, calcined alumina is being produced in the rotary kiln on the reasonable temperature, with the characteristic of high conversion rate, stable crystallization and low impurity content.Its products have excellent performance of high mechanical strength, stable shrinkage rate, good electric