Caterpillar Inc. is a manufacturer of construction and mining equipment, diesel and natural gas engines, industrial gas turbines and diesel-electric locomotives. The Company operates through its three product segments: Resource Industries, Construction Industries, and Energy & Transportation. It also provides financing and related services through its Financial Products segment. Its Construction Industries segment provides machinery for infrastructure and building construction applications. Its Resource Industries segment offers machinery for mine and quarry applications. Its Energy & Transportation segment offers reciprocating engines, generator sets, gas turbines and turbine-related services, diesel-electric locomotives and other rail-related products and services. Its Financial Products segment conducts its business through Caterpillar Financial Services Corporation (Cat Financial). Cat Financial provides retail and wholesale financing alternatives for Caterpillar products.