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About product and suppliers:
        Alibaba.com offers 61 trapezoidal screw making machine products. About 55% of these are plastic extruders, 22% are thread rolling machines. 

A wide variety of trapezoidal screw making machine options are available to you, such as sheet, plates. You can also choose from single-screw, double-screw. 

There are 61 trapezoidal screw making machine suppliers, mainly located in Asia. The top supplying country is China (Mainland), which supply 100% of trapezoidal screw making machine respectively. 

Trapezoidal screw making machine products are most popular in Domestic Market, Mid East, and South Asia. 

You can ensure product safety by selecting from certified suppliers, including 35 with ISO9001, 19 with Other certification.