The business scope includes general items: Agricultural machinery manufacturing; Sales of agricultural machinery; Used car distribution; Used car sales; Wholesale of hardware products; Leasing of construction machinery and equipment; Sales of construction machinery; Sales of office supplies; Retail of pet food and supplies; Sales of electronic products; Sales of machinery and equipment; Sales of metal products; Intelligent control system integration; Sales of CNC machine tools; High speed precision heavy load bearing sales; Sales of metal tools; Sales of Class I medical devices; Sales of Class II medical devices; Wholesale of medical masks; Sales of plastic products; Manufacturing of intelligent unmanned aerial vehicles; Sales of intelligent power transmission and distribution and control equipment; Sales of metal materials; Sales of metal structures (except for projects that need to be approved according to law, business activities shall be carried out independently according to law with the business license): Import and export of goods; Technology import and export; Medical services; Category III medical device business; Food business (selling pre packaged food); Food business; Food Internet sales