The roller shutter retractor device arranged in the boot can also prevent theft.
卷帘伸缩装置装在尾箱内还可以防盗。
It is more rational of retractor device of built-in butted bridge, durability is obviously superior to the expansion joint of other types.
嵌固对接式伸缩装置耐久性明显优于其它类型伸缩装置，是因为其设计相对比较合理。
The utility model relates to an assisting retractor device of an electric retractable door, belonging to the field of electric retractable equipment.
本实用新型涉及一种电动伸缩门助伸缩装置，属于电动伸缩装置领域。
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