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About product and suppliers:
        Alibaba.com offers 56 trapezoidal screw making machine products. About 35% of these are thread rolling machines, 35% are plastic extruders. 

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

There are 56 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 28 with ISO9001, 13 with Other certification.