About product and suppliers:
            375 magnesium carbonate block products are offered for sale by suppliers on Alibaba.com, of which other accessories accounts for 80%, carbonate accounts for 5%, and other graphite products accounts for 1%. 

A wide variety of magnesium carbonate block options are available to you, 

There are 375 suppliers who sells magnesium carbonate block on Alibaba.com, mainly located in Asia. The top countries of suppliers are China, Taiwan, China, and Pakistan, from which the percentage of magnesium carbonate block supply is 98%, 1%, and 1% respectively.