... , who is specialized in design, manufacturing and supplying kinds of dredging equipment, i.e. amphibious excavators, swamp excavators, swamp undercarriages, long reach ... to PU240 to fit to the upper part of 8-24ton normal excavators, e.g. Caterpillar, Hitachi, JCB, Volvo, Komatsu, Kobelco, Daewoo ...