The 271 hp DX300LC-5 Tier 4-compliant crawler excavator from Doosan Infracore America Corporation has D-ECOPOWER that optimizes hydraulic system output with engine horsepower, improving machine efficiency, productivity and fuel consumption, while refining machine control and enhancing operator comfort. Enhanced track spring and idler assembly, and large bushing in track rollers improve uptime. The Doosan Telematics system allows equipment owners to monitor machine location, hours, fuel usage, engine idle versus work time, error codes, and engine and hydraulic temperatures remotely. 770/831-2200; www.doosanequipment.com.