店员：比如奶和奶制品（奶酪、酸奶）、硬果类（花生）及连壳一起吃的小鱼、小虾、豆类、荠菜等，都有利于补钙。 。
Milk and dairy foods (such as cheese, yoghurt), nuts (such as peanuts)and a little fish, shrimp, legume and shepherd's -purse are favorablefor the supply of calcium.
核桃壳磨料坚果类植物磨料，具有良好的耐用性和弹性，并能和其他抛光材料混合使用。
Nuts kind of botanic abrasives, with good durable and flexible properties, can be used mixed with other polishing abrasives.
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