GR3505 is an advanced heavy-duty mining grader designed for Australian mining giant Rio Tinto. To meet the high requirements of Rio Tinto, the Chinese company sets up a special R&D group including its CAE center, hydraulic center, electronic control center, etc. to carry out technical improvement in the aspects of intelligent control, energy saving, noise control, stability, etc. GR3505 made breakthroughs in 13 technical aspects, and the new model boasts international advanced level.