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About product and suppliers:
        Alibaba.com offers 529 limestone feed grade products. About 41% of these are carbonate, 3% are limestone, and 1% are fish meal. 

A wide variety of limestone feed grade options are available to you, such as calcium carbonate, sodium bicarbonate. You can also choose from agriculture grade, industrial grade, and food grade. As well as from free samples. 

There are 452 limestone feed grade suppliers, mainly located in Asia. The top supplying countries are Vietnam, China (Mainland), and India, which supply 70%, 22%, and 1% of limestone feed grade respectively. 

Limestone feed grade products are most popular in Southeast Asia, South Asia, and South America. 

You can ensure product safety by selecting from certified suppliers, including 146 with Other, 52 with ISO9001, and 2 with GMP certification.