Shanghai is the registered address of mechanical science and technology ltd., located on the 1st level-2 of 4 4 shen brick road, 5599 shen brick road, located in the song river zone, shanghai city, and is represented by zhang wanbao, a legal person operating in the field of technological development, technical services in the field of mechanical science and technology; processing, manufacturing and wholesale retailing of mechanical equipment (except for special and agricultural use); technical development, technical services, technical advice; installation and maintenance of refrigeration equipment; import and export of goods and technology; and retail distribution of purification equipment and accessories, hardware, packaging materials, axes, valves, pipe parts, compressors and accessories, instruments. [projects subject to legal approval may not operate without the approval of the relevant department]