The humanity needs the comfortable environment, advanced passes the air-conditioning system to become the architecture industry warmly to advocate peace the construction specialized primordial consideration topic, €œreaches the branch€ ventilation duct's use from the technology, the quality, the cost and so on multi-angles of view to consider that catered to has passed the air-conditioning system high level warmly the demand, reached the branch air pipe arrangement (Beijing) the Limited company is the specialized production passes the air-conditioning system each kind of ventilation duct's enterprise warmly, in line with €œthe science guidance, the technology for this, the quality first, served first€ the objective, under the strict engineering supervision, the use reached the branch newest special purpose equipment, carried on the production according to the strict management and operation system and the quality assurance system, The specialty is engaged in produces each kind of specification the ventilation duct as well as each kind of necessary part, the pipeline great variety, the versatility, mainly uses in the building passing the air conditioning to ventilate warmly with the row kind of as well as aspects and so on industry dust removal. reaches the branch company is also the Chinese biggest hose production