According to Aiqi's inquiry, Shanghai Gong Hu is a large enterprise group involving many fields, with different subsidiaries and branches. Its enterprise type is joint stock limited company (listed, invested or controlled by natural persons), which was established in 1958. So Shanghai Gong Hu Group is a private enterprise. Gong Hu is an industrial equipment enterprise group integrating R&D, production and investment. It has more than 60 years of professional experience in R&D and welding and cutting equipment manufacturing, and is listed on the main board of Shanghai Stock Exchange.