R&D, production, processing and sales of microcrystalline glass, microcrystalline utensils, special glass, borosilicate glass, electronic glass, home appliance accessories and related products, printing of glass materials, export business of the company’s self-produced products and technologies, import business of raw and auxiliary materials, mechanical equipment, instruments, spare parts and technologies required for the company’s production and scientific research (except for goods and technologies that are operated by national companies and prohibited by the state from import and export); operates processing of imported materials and “three to one supplement” business**