2 亚洲国产精品久久久久婷婷老年,乱中年女人伦av三区,玩弄白嫩少妇XXXXX性

yangzhizhe.cn-日本另类αv欧美另类aⅴ,久久精品99国产精品日本,日本丰满熟妇VIDEOSSEX一,亚洲精品无码不卡在线播HE

Curtain

1. The curtain system is driven by automatic control motor, heavy load and low failure rate, which can provide the curtain system with safe, effective and long-lasting power support.

2. The curtain system is equipped with a corner pulley made of nylon+glass fiber, and so it is wear-resistant and of long service life. It can facilitate the steering of load cable and the installation of the drive motor.

3. A small pulley is arranged above the curtain system to realize the steering of the traction rope.

4. In the curtain system, aluminum alloy clamping groove is used to fix the curtain cloth with plastic-coated clamping spring.

5. Geogrid is used in the curtain system to prevent the curtain cloth from being sucked in under the NP ventilation environment, so as to ensure that curtain cloth can be opened and closed normally.

Download PDF Contact us  >