Zhoushan Changjia - China

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. Zhoushan is known for its multiple isles and the production of screw rods. To the east, it looks at Putuo Mountain, a Buddhist pilgrim resort across the sea; to the west, it is adjacent with Beilun Port of Ningbo, an international deep-water port.
Company combines scientific research development, production and business operation and business property as a whole. 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  

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serve its users with designing of sample preparation.
https://www.cjscrewbarrel.com/product/extruder-screw/mini-screw/three-dimensional-printer-screw.html