... in design, manufacturing and supplying kinds of dredging equipment, i.e. amphibious excavators, swamp excavators, swamp undercarriages, long reach boom ... fit to the upper part of 8-24ton normal excavators, e.g. Caterpillar, Hitachi, JCB, Volvo, Komatsu, Kobelco, Daewoo, ... , 3 chains 3. ISO9001 Certified Manufacturer PU200 pontoon undercarriage for amphibious excavator, 3 chains track, fit to 18-20ton ...