End pre-bending of high precision
High Accurate end pre-bending when bending the end ,it can freely top roller presses down ,and high accurate end pre-bending is done under a certain pressure. 
Excellent product precision 
Products have superior precision due to continuous bending and high accurate end pre-bending ,products have superior precision .As the toproller is in the shape of drum , with the supporting roller adjusted, it can coil ideal products in the wide range from sheets to plates. 
NC control high producing efficiency 
NC control high production efficiency one operator ,simple operation ,and high efficiency .
CNC
Three are following controlling methods according to its use.TNC(top NC):for many types but small quantity of production; T&BAC(top and bottom NC):for few type but large quantity of prodction; CNC(CNC):for many types but large quantity of production. 
Rich bending shapes