General Projects: Sales of electronic components and electromechanical components, Special equipment manufacturing( Excluding licensed professional equipment manufacturing), Power transmission, distribution and control equipment manufacturing, Distribution switch control equipment manufacturing, R&D of distribution switch control equipment, Bearing manufacturing, bearings、 Gear and transmission component manufacturing, Industrial automatic control system device manufacturing, Sales of industrial automatic control systems, General valve and plug manufacturing( Excluding special equipment manufacturing), Mechanical equipment research and development, transformer、 Rectifier and inductor manufacturing, Hydraulic power machinery and components manufacturing, fan、 Fan Manufacturing, fan、 Fan Sales, Mining machinery sales, Mining machinery manufacturing, Gas compression machinery manufacturing, Electronic component manufacturing, Manufacturing of liquid and gas sealing components and systems, Seal manufacturing, Seal sales, Sales of high-performance sealing materials, Rubber product sales, Paint sales( No hazardous chemicals), electronic、 Mechanical equipment maintenance( Excluding special equipment), Special equipment repair, General mechanical equipment installation services, General equipment repair, Metal structure sales, Metal structure manufacturing, Non-metallic waste and scrap processing, Refractory production, Refractory sales, Computer and office equipment repair, Gas compression machinery sales, Lightweight building materials sales, Lightweight building material manufacturing, Special equipment sales, Sales of liquid and gas sealing components and systems, Pneumatic power machinery and components manufacturing。( In addition to licensing business, Able to independently operate projects that are not prohibited or restricted by laws and regulations)