The optimal conditions for synthesis of alkali green 4 include the carbamide and zinc chloride as catalyst, chloranil and bichrome.
合成碱绿色4的最佳条件包括：尿素和氯化锌作为催化剂，四氢呋喃和双色。
Shrimp is full of zinc, and leafy green vegetables are full of folate.
虾中富含锌元素，绿叶蔬菜中又富含叶酸。
Characteristics of the Product: green, natural, unpolluted and rich zinc - selenium.
产品特点：纯绿色、全天然、无污染、富锌硒。
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