With rapid development of electrostatic powder coating industry of our country, electrostatic powder coatings are applied in various fields more and more widely. Therefore, the users have higher and higher requirements for the quality of the coatings and the performance of electrostatic-powder manufacturing equipment. In such a case, Kingway Company has successfully developed ceramic kneading block, which is the key part of twin screw extruder------ one of important production equipment for thermohardening power materials. Extremely high hardness and abrasive resistance of ceramics results in decrease of materials stored in the helical cylinder, reduction in the quantity of generated solidified particles, substantial increase in the duration of continuous operation of the extruder, and improvement of the screw self-cleaning performance and kneading effect.