Usage:Treat the illness of scarcity of VB2.

核黄素（VB2）用途：治疗各种VB2缺乏症。

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There are two products which accounts for 10% of main business income of the company, i. e VB2 and TNZ .

占公司主营业务收入10％以上的产品有两个——核黄素和替硝唑。

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There are two products which accounts for 10% of main business income of the company, i. e VB2 and TNZ .

占公司主营业务收入10％以上的产品有两个——核黄素和替硝唑。

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