As a leading manufacturer of core components for twin screw extruders, Zhitian has independently developed a range of gearbox series—from compact lab-scale models to high-torque industrial-grade units. This video showcases real factory footage of our ZT series gearboxes, including precision machining, assembly, and internal oil circulation design. Zhitian gearboxes are known for their high torque capacity, quiet operation, and long service life, serving various industries such as plastics, chemicals, and food processing.