什么是自由门？
From: Author:总经办 Publish time:2011-12-09 12:20 Clicks:993
一般来讲，能够通过碰撞双向开启，人或物通过后能靠重力自动关闭的非电动门称为自由门。国内对自由门的称呼较多，如通道门、双开门、碰撞门等等。常用于超市卖场、工厂车间、便捷通道等。
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