1. Integrated hydraulic system. 2. ISO9001:2000 certificates. 3.Steel welded structure and ... stress, high in rigidity, sturdy and durable.2. Hydraulic drive, swing beam, return of knife beam is smooth and prompt by accumulator or nitrogen ... the front of the machine.5. The stroke of knife beam can be adjusted steplessly, conveniently and fast.6. Preselection of ...