Whether digging, loading, paving, or moving, Caterpillar does it all. The company is the world's #1 manufacturer of construction and mining equipment, which includes excavators, loaders, and tractors, as well as forestry, paving, and tunneling machinery. It also manufactures diesel and natural gas engines, industrial gas turbines, and diesel-electric locomotives. Subsidiary Caterpillar Financial Services offers a slew of financing, leasing, insurance, and warranty products and services for dealers and customers. Among Caterpillar's other services are remanufacturing through Caterpillar Remanufacturing Services and rail-related upgrade, repair, and maintenance services through Progress Rail Services.