1.Original upper excavator,brand CAT,Komatsu,Hitachi,Doosan,Volvo... 2.Strong pontoons with 3 chains to reduce ... and produce according to your own requests with excavator brand CAT,Komastu,Kobelco,Doosan,Hitachi,Volvo,XCMG,Daewoo,SDLG,YUCHAI,XIAGONG.....Besides ...