Agriculture Greenhouse Film Side Roll up Unit for Wholesales. Scientific Design: Replaces traditional turbines with scientific design for easy operation. Durable Steel Gear: Thickened refined steel gear with double anti-rust paint finish for long life. High Torque Output: Provides 30N.m output torque for efficient film rolling. Compact Size: Small size suitable for production greenhouses. Wide Application: Designed for side film rolling in single-layer steel greenhouses.