BLKMA brand is a professional company for auto duct production line、Rectangular duct making machine、spiral duct forming machine、round duct making machine. BLKMA company from China, founded in 1994, located in Ma'anshan City, Anhui Province, China.only 26 kilometers away from Nanjing Lukou International Airport has a very developed transportation system to facilitate global customers at any time visit. In the pipeline processing machinery industry in China, BLKMA is a very authoritative modern enterprise. It has participated in the formulation of China's national pipeline machinery industry standards for many times. In recent years, BLKMA has maintained its rapid growth in sales revenue and business scale through technical innovation and continued development of the global market. BLKMA is world class brand name which is serving the world technology to its customers in 60 countries and growing together with them. BLKMA® HVAC duct processing machines supplier providing overall solutions