Zhoushan Changjia Plastic machinery Co., LTD is a China shoe machine barrel screws manufacturers and extruder replacement parts factory, company located in the middle of Jintang Island of the city of Zhoushan. The Company relying on a strong technical force, advanced process equipment, abundant experience, realistic and innovative style, considerate and fast service, is providing its users with products of reliable performance, good quality and reasonable price. It is a professional producer of various types screw rods for cylinders of extruders and injection molding machines. It is also able to customize specific Extruder replacement parts according to the users' requirements and serve its users with designing of sample preparation.