The industry is professional technical service industry, the business scope includes: License projects: All kinds of engineering construction activities, import and export of goods, import and export of technology. (For projects subject to approval according to law, business activities can only be carried out after the approval of relevant departments, and specific business projects shall be subject to the approval documents or licenses of relevant departments. ) General projects: Engaged in the field of Marine engineering technology technology development, technical consulting, technical service, technology transfer, sales of ship equipment and accessories, hardware products, ship sales, maintenance, installation and maintenance of ship equipment (except special equipment), leasing of own equipment (except financial leasing), business consulting, domestic trade agency, project management services, Human resources services (excluding job agencies, labor dispatch services), science and technology intermediary services. (Except for the projects subject to approval according to law, independently carry out business activities according to law with the business license).