Boneng is a renowned Chinese manufacturer of a large range of quality gearboxes, see the overview catalogues.

The range includes: Worm, Helical, Bevel Helical, Planetary, T box, Parallel shaft, Helical spiral, Hoist, Winch drum, Bucket elevator.
Powers from 0.1kW to 3,000kW
Reduction ratios 1:1 to 40,000:1 and beyond.
Also, screw jacks from 1 to 100 tonne in either trapezoidal or ball screws.