The engineering plastics (such as PA, PC, ABS, PET, PPS, PEEK, etc.), have been used in the fields of electronics, electrical appliances, automobiles, transportation, aerospace manufacturing, national defense and military industry, etc. JIEYA provides twin screw extruders specially designed for this application including short fiber reinforce compounding and long-fiber thermoplastic. High torque type twin screw extruders and loss in weight feeding systems are optional, which can further improve the performance of machines and increases the output.