本实用新型的有益之处在于：操作简单，使用方便，增加了可以在同一画框内进行双面存放装饰画的功能。
The utility model has the advantages of simple operation, convenient usage and the additive function that the decoration painting can be stored with double sides at the same frame.
本实用新型的有益之处在于：操作简单，使用方便，增加了可以在同一画框内进行双面存放装饰画的功能。
The utility model has the advantages of simple operation, convenient usage and the additive function that the decoration painting can be stored with double sides at the same frame.
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