production line for block special welding and molding ... .5. the system can diagnose the production line automatically.6. every production process can be showed on the screen ... 15,QT8-15,QT10-15 and QT12-15) economic production line2. (QT6-15,QT8-15,QT10-15 and ... 15) well-chosen production line3. (QT6-15,QT8-15,QT10-15 and QT12-15) automatic production line automatic block making production line (QT6-15) ...