Copper is one of the essential microelements in human.
铜是人体重要的必需微量元素之一。
Iodine is one of essential microelements for people and animal.
碘是人和动物必需的微量元素之一。
Copper as one of the essential microelements of animal plays a role in promoting health growth of animal and increasing reward of forage.
铜是动物必需的微量元素之一，具有促进动物生长和提高饲料报酬的作用，已经被广泛地应用于动物饲料中。
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