微量元素是人体正常生活所必需的物质,微量元素虽然在人体含量极低,但对人体健康有很大影响,是机体正常发育和代谢必不可少的。儿童正处在生长发育的旺盛阶段,需要各种微量元素来满足生长发育的需要,微量元素锌 Trace elements are the necessary substances for normal human life, trace elements in the human body, although very low content, but it has a great impact on human health, is the body’s normal development and metabolism is essential. Children are in the strong stage of growth and development, need a variety of trace elements to meet the needs of growth and development, trace elements zinc