Rolling shutter opening methods are varied, electric remote control, electric button, manual remote pole, pull strap, spring shaft drive and so on.

卷帘窗的开启方式有多种多样，电动遥控、电动按键、手动摇杆、手拉皮带、弹簧轴驱等。

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PVC cloth protecting curtain The automatic pull-out and take up shield with the shell made of stainless steel consists of shell, spring shaft and fabric cloth.

PVC 布防护帘外壳用不锈钢材料制成的自动伸缩式防护带，是由外壳、弹簧轴、和纤维布等组成。

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Single lip with "V" spring reinforced, suitable for poor roundness and largely swung rotary shaft sealing.

单密封唇V形弹簧加强，适用于转轴圆度不佳或偏摆较大的密封。

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