Automation equipment research and development; manufacturing and sales of mechanical equipment; sales of water dispensers and water purification treatment equipment; car beauty and services; design, research and development, production, sales, and maintenance of fully automatic car wash machines and self-service car wash machines; production, manufacturing, and sales of automobile and motorcycle accessories, electronic products, and clothing; leasing, sales, operation, and maintenance of intelligent car wash equipment; self-operated and agent import and export of various commodities and technologies, except for commodities and technologies that are operated by national companies or are prohibited from import and export.