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About product and suppliers:
        Alibaba.com offers 283 duct board machine products. About 11% of these are duct making machine, 7% are other metal & metallurgy machinery, and 4% are plastic extruders. 

A wide variety of duct board machine options are available to you, 

There are 283 duct board machine suppliers, mainly located in Asia. The top supplying countries or regions are China, Indonesia, and South Korea, which supply 99%, 1%, and 1% of duct board machine respectively. 

Duct board machine products are most popular in United States, Thailand, and Malaysia.