BLKMA company specializes in manufacturing and sales of auto duct production line、Rectangular duct making machine, spiral duct forming machine, round duct making machine and so on.

BLKMA®-Square duct, spiral duct, round duct machinery manufacturer, with years of technical accumulation, we have provided high quality products and services for duct processing companies in 100+ countries, and have won wide acclaim in the global market. If you have the needs of duct processing machinery then we will be the best choice.