The registration address of cores compression machinery ltd. In shenzhen city is located at no. 102, westsidea road, west china street, shenzhen city, with the registration authority shenzhen city market supervision authority and the legal entity representing shenzhen city, and the scope of operation includes the following general operating projects: the licensed projects are: maintenance of water, electricity, gas installation and surrounding equipment and related technical support; the sale of lubricating oil; plumbing installation works, energy-saving works, air pressurizers, dryers, production of residual heat recovery equipment, vacuum pumps, clean air reprocessing equipment; and the development, sale and maintenance of empty presses, dryers, residual heat recovery equipment, vacuum pumps, vacuum pumps, clean air reprocessing equipment。