High-Precision Worm Wheel for Efficient Power Transmission******Innovations and Trends in Worm Wheel & Spiral Gear Technology: Unveiling Side Reduction Flange Shaft Applications Zinan Technology Co., Ltd. | Official Website Tel: +86 13451474678 |  Mobile: +86 13451474678 Email: test@test.com Address: Shijiazhuang, Hebei Province, China 1. Introduction: The Evolution of Worm Wheel and Spiral Gear