1. JB/T10816-2007, JB/T10817-2007 Hard tooth surface gearbox;
2. The series of gearboxes includes QYS (three fulcrum) and QYD (base);
3. Three structures: Three-level, fourth, and combination;
4. Installation: vertical, horizontal, and even deflection installation at a certain angle, convenient and flexible;
5. Welding box.
