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双排穿线拖链的构造
(5)看构造不但能够在力学上发回作用,并且要看外观。
http://www.hengtonght.com/htskjc-Products-177755/ 不锈钢金属软管
http://www.hengtonght.com/htskjc-Products-103873/ s型拖链
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