On the top of the envelope, jot down the date, subjects, or activity.
在信封封面，记下时间、主题或活动名称。
Project overview: the main activity is the production, operation and sales of organic date tea.
项目概况：主要生产经营有机枣茶及销售。
Project overview: the main activity is the production, operation and sales of organic date tea.
项目概况：主要生产经营有机枣茶及销售。
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