Are Du Nan and the DEA the same boss?

Yes According to official website's inquiry, Aidi Zhikong is an industrial group specialized in the research and development and manufacture of valve products under Du Nan, with five entities. Its products cover the fields of high, medium and low pressure valves, which are widely used in water supply and drainage, city gas, city heating, building automation, power stations and other industries, with customers all over the world.