Manual Winch Greenhouse Film Roll Up Roof Unit for VentilationAgricul...

Description

Easy to install and operate Precise pulley,anti-aging,easy to roll up greenhouse film,save the human resource
Reliable performance of bidirectional self-locking High-quality chain,will not get rusty,long life cycle,save money
Add the transition gear in the transmission system with more stead performance
Big speed ratio and output torque; Light weight
Widely used in greenhouse and poultry house and can manually operate small area of shading