Aotai Electric, located in Jinan, Shandong, China, was founded by several professors and their graduate students from Shandong University in 1993. Now it has developed into a leading provider of welding equipment and solar inverter in China, and has two manufacture bases in Zibo and Jining. Core competencies are the development, production and sale of welding machines. Its application fields cover areas of vehicles, container, motorcycles, and so on. The solar inverter is used on residential homes (roof projects), large power plants, and large construction projects.