1. SLW160 swamp undercarriage for drill rig, amphibious excavator 2. Isuzu or Cummins engine 3. ISO9001 ... normal crawler excavators are hard to complete, such as water area treatment, environmental management, stream channels dredging of civil works, ... stable performances with reliable quality assurance. ¨ Imported top-class hydraulic pumps and drive motors. The power transmission and execution system ...