Stak Inc. engages in the research, development, manufacture, and sale of oilfield-specialized production and maintenance equipment in the People's Republic of China. The company offers oilfield vehicles and related equipment, such as oil pumping trucks, oil-well repair trucks, fracking trucks, well flushing-wax removal trucks, boiler trucks, and other equipment and components for oil-well repair and maintenance, fracking operations, oil well cleaning and wax removal, and oil pumping and boiler operations. It also provides automation solutions services, including software development, training, debugging, and other services for oilfield-specialized production and maintenance equipment. In addition, the company engages in the design, collaboration, production, and sale of specialized oilfield vehicles. Stak Inc. was founded in 2012 and is based in Changzhou, the People's Republic of China. STAK Inc. operates as a subsidiary of Lanying Capital Ltd.