Manual Greenhouse Film Roll up Unit for Easy Ventilation Access

Manual Greenhouse Film Roll up Unit for Easy Ventilation Access. Premium Cast Aluminum Body: Meticulously crafted from premium cast aluminum using state-of-the-art die-casting process. Self-Locking Mechanism: Equipped with innovative two-way self-locking device for effortless control and pause/resume. Durable Steel Components: Gears and shafts made from 45# GB steel with specialized heat treatment for longevity. Rust-Resistant Interior: Features galvanized finish with dual-layer rust-resistant coating and stainless steel parts. Compact Design: Hole at 2/3 length minimizes turning radius, ideal for compact installations. Korean Design Style: Sophisticated Korean design ensures seamless and intuitive user experience. Full Customization Available: Offers full customization, minor customization, and customization from designs. ISO9001:2015 Certified: Manufacturer holds ISO9001:2015 management system certification for quality assurance.