[Tianjin Jinzhong Ji HVAC purification equipment to recommend the star product - ventilation ducts] ventilation ducts are industrial and civil engineering, ventilation and air conditioning pipes made of metal or non-metallic pipe flange plate is to allow air circulation, a lower concentration of harmful gases municipal infrastructure. Duct Fabrication and installation of used plates, profiles and other major finished materials, design and related products should comply with existing national standards prescribed ventilation pipeline project, and apply the factory inspection certificate shall existing national standards for acceptance when the materials approach. [Tianjin Jinzhong Ji HVAC purification equipment to recommend the star product - Ventilation ducts] use classification in general are: return air duct cleaning system, central air conditioning and ventilation pipes, industrial supply and exhaust ventilation duct, environment protection system for suction and discharge pipes, mine gas drainage pipe, duct and other mine rubberized cloth; shape classification in general are: round, rectangular, spiral, etc; process can be divided into the wind pipe flange angle iron, total of flange plate duct. Ventilation ducts, pipes, Tianjin, Tianjin Jinzhong Ji galvanized pipe manufacturers provided by the Tianjin Jinzhong Ji HVAC purification equipment. Tianjin Jinzhong Ji HVAC purification equipment Limited (www.Jzjnt.com) strong, credible, in Tianjin fans, ventilation equipment industry has accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead the group into the brilliant and you work for a better future!