滑轮是推拉门的核心技术部位，一定要慎重选择。
Sliding Door pulley is part of the core technologies must be carefully chosen.
与滑轮相配套的轨道对于滑动门的使用也是至关重要的，滑动门常用的轨道一般有冷轧钢轨道和铝合金轨道两种。
The track matching the pulley is crucial for the use of sliding door. Generally, there are two types of sliding tracks: one is made of cold-rolled steel; the other one is aluminum alloy.
与滑轮相配套的轨道对于滑动门的使用也是至关重要的，滑动门常用的轨道一般有冷轧钢轨道和铝合金轨道两种。
The track matching the pulley is crucial for the use of sliding door. Generally, there are two types of sliding tracks: one is made of cold-rolled steel; the other one is aluminum alloy.
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