With the rapid development of the twin screw extruder industry, the extruder has been used more and more widely. And the downstream industry also have higher and newer demands, such as a variety of high performance engineering plastics, elastomers, fiber reinforced composite materials and biodegradable plastics’s processing. All these tasks cannot be done without the strong gear transmission system, the screw shaft of high bearing and screw elements with special functions. The upgraded version of the parallel double screw - Yongteng YT series came into being, to show the client its simple and elegant appearance, humanized detail design and advantages of high torque, high rotating speed, high output, low energy consumption and long life, which becomes the extruder customers prefer!