Bulldozer (BHD42-3) 1. Electric-control transmission and steering system by one handle. 2. PPC (Proportional pressure control) valve controlled working equip- ment system. 3. K type suspended and floating undercarriage system. 4. GPS intelligent service system. 5. Centralized pressure inspection system, centralized lubricating system. 6. Advanced & rational structure and convenient& flexible operation.
