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ä¾å¥:åè¯è±è¯1.Plain milk is also important, as it provides a good source of calcium.
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2.Other raw vegetables can be useful: for instance, carrots are a good source of calcium and peas a good source of zinc and protein.
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3.The organic calcium can be acquired by two ways: one is to calcine, and the other is to add organic acid into eggshell power directly. The eggshell is a good source of calcium in food, and has broad development prospects.
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4.That is one source of new demand.
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5.Brittle nails are indicative of calcium deficiency.
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