Shang Gong Group replied to the inquiry letter from Shanghai Stock Exchange. The company has focused on the field of connecting technological equipment based on sewing machine manufacturing technology for many years. By means of multiple acquisitions and mergers as well as continuous innovation and research and development, the original product line has been enriched. The product categories have been expanded from ordinary household sewing machines and industrial sewing machines to automatic sewing units for clothing, medium-thick material sewing machines for leather products, automatic workstations for industrial textiles, and intelligent manufacturing equipment related to carbon fiber composite materials and processing centers. Among them, the 3D sewing technology and carbon fiber sewing and cutting technology of KSL branch of Baifu Industrial Systems and Machines GmbH in Germany are world-leading.