Upgraded strength for Next Level Performance in Granite and Marble Applications., the SY390 HD Excavator delivers exceptional breakout force, reinforced structural strength, and precise hydraulic control to handle the toughest quarry conditions. Built with an Ultra Heavy-Duty undercarriage, high-capacity hydraulics, and a robust powertrain, it ensures consistent performance, superior stability, and long-term reliability under extreme rock loads and abrasive environments. Designed to operate cont