Founded in 1925, one of the world's largest diesel engine manufacturers, a technology leader and a leading global manufacturer in the field of diesel and natural gas engines and gas turbines for industrial use. Caterpillar generators were once recognized as the world's best quality, ensuring efficient and stable power transmission even after long-term use. In 1942, Caterpillar's generator set was used by the U.S. military in the war; In 2003, Caterpillar became the first engine manufacturer to fully comply with and certify the U.S. Environmental Protection Agency (EPA) for its entire Model 2004 line of clean diesel engines. Caterpillar exclusively supplies a full range of engines, generators and control systems to ensure consistent product testing and quality control, making it more suitable for larger enterprises or factories.