The registration address of shen yang jin to da ventilation installation engineering ltd. Is located in room a202, 40 dejan street, shenyang city, and is the market supervision authority of shen yang city, with the legal personality representing he yong, and includes licensed projects: general operating projects: ventilation works, fire works, ventilation equipment, air conditioning equipment, installation of smoke purification equipment (site installation), central air conditioning cleaning services. (projects subject to legal approval are not allowed to operate without the approval of the relevant department