The machines of DK77250, DK7732, DK7740 and DK7750 can be equipped with many types of micro-computer CNC system. They are possessed of advanced technology, perfect function, reliable performance, easy operation and maintenance. The machines are suitable for cutting hardened steel, non-ferrous metals, precise dies, template, narrow slit and work pieces with micro-porosity, especially for super hard alloy, especial metal material and work pieces with complicated shape. They are the best device for great and small production in machinery, electric appliance and instrument industries. They can also economize the power and materials. The machines are one of our main products. They are sold well all over our country and some other countries and areas, they are well received by customers.