Feature：

1. The whole system without chain control and cord control, it's really safety

2. Lower pull rope or lower beam 2-3cm, and the system will unlock automatically, fabric rises at a constant speed

under elastic force, Pull down the rope or lower beam>3cm, fabric stop automatically after release

3. The system is equipped with retarder, and the roller blind automatically rises at a uniform and stable speed.4. The roller blind system can stop in anywhere

5. By adjusting the number of pre tightening turns of the boost spring, the automatic rising speed of the roller blind

can be adjusted

6. System with limiter, Automatic stop when the roller blinds rises /falls to the fixed position

7. The clutch used mental core technology