The registration address of east chang city ikee is located at room 1108, d-kinglong building, 206 community wing boulevard, east chang town, with the registration authority of the east chang city market supervision authority, represented by a legal person, and covers the sale, lease, repair and maintenance of equipment for air-voltage systems, vacuum equipment, nitrogen and oxygen-making equipment, refrigeration equipment, mechanical and electrical equipment, hardware machinery, pipes, valves, water pumps and accessories; research and development and technical services for energy-saving equipment, automation equipment; installation works, energy-saving renovation works; sales: industrial lubricating oil; and import and export of goods or technology (with the exception of goods and technology that are prohibited or subject to administrative approval by the state). (projects subject to legal approval to operate with the approval of the relevant department)