The registration address of hubei quadrilateral, s. E. L., is located at no. 38-3 of tongshan industrial park, hanyang economic development zone, wuhan city, with legal representation from li jihyan, and covers the development of electrical technology, technical services, technical advice, technology transfer; the production of experimental equipment, electrical products, instrumentation forms, high-pressure kits, technical services, technical advice, technology transfer, repair, lease, wholesale, retail trade; metal materials, electrical equipment, technological development of software, technical services, technical advice, technology transfer, production, wholesale, retail trade; computer system integration; the import and export of goods and technology (other than goods subject to state restrictions or prohibitions) (projects subject to legal authorization and to the approval of the relevant authorities)