本发明提供了一种绞车带轴，属于机械技术领域。
The invention provides a winch band shaft, belonging to the technical field of machinery.
本发明提供了一种充电式液压工具，属于机械技术领域。
The invention provides a rechargeable hydraulic tool, which belongs to the technical field of machinery.
本发明提供了一种产品的包装结构，属于机械技术领域。
The invention provides a package structure for a product, belonging to the machinery technical field.
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