R&D, manufacturing, assembly, sales and after-sales service of precision machinery and equipment, automobile parts, motorcycle parts, aluminum alloy precision parts, zinc alloy precision parts, cast iron precision parts and precision machinery products; design, manufacturing, sales and technical services of tooling molds; engaging in technology development, technology transfer, technical consulting and technical services in the field of metal products technology; self-operated and agent import and export business of various commodities and technologies, except for commodities and technologies that are restricted by the state or prohibited from import and export.