The legal entity, represented by hu dongdong, is operating in the following areas: production, sale, installation of metal doors and windows, stretching doors, slide doors, electric doors, suspension doors, gates, gates, plates, fast-rolling curtain doors, stacking doors, industrial doors, electric curtain doors, garage doors, fireproof doors, burglary doors, fireproof windows, kendji doors, shutters, blind windows, electric stretching doors, direct doors, folding doors, industrial doors, electric doors, advertising gates, gates, garage systems, people's gates, small doors, face recognition, lifting columns, break-down doors, counters, windows, fast stacking doors, hard-crowded doors, soft doors, industrial doors, industrial doors, industrial doors, lifting doors, industrial gates, lifting doors, metal doors, steel gates, steel gates, etc. (projects subject to legal approval before operating with the approval of the relevant department)***