... Certificated manufactuer SUNTON is the biggest manufacturer of swamp excavators in China, who is specialized in design, manufacturing ... and supplying kinds of dredging equipment, i.e. amphibious excavators, swamp excavators, swamp undercarriages, long reach boom and sticks etc. ... has over 70% domestic market share in amphibious excavators.Sunton PU series pontoon undercarriages that range from PU100 ...