[Jie Weinuo to recommend the star product - flange plate duct price advantage] unique production equipment: multi-purpose shears, multi undercut machine, multi-beading machine, a total of flange forming machine, total plate flanges folded square machine, multi-angle code code and hook punch IV. Production and processing operations: 1. processing semi-finished products based on customer delivery exploded and system number corresponding to Fig ---- cutting cut duct system number beading (enhanced) Joint undercut flange plate forming ---- fold side - - Corner assembly seam and processing silica tightly sewn ---- ---- shipment quality inspection [Jie Weinuo to recommend the star product - flange plate duct] Jie Weinuo Industries is a manufacturing production install one enterprise in Tianjin ventilation pipe production in 2015 捷维诺 fight is excellent quality, good service, low prices, integrity first. [捷维诺 to recommend the star product - black and white iron duct price advantage] unique production and installation of air duct should be consistent with design drawings, contracts, and the implementation of the relevant technical standards Tianjin ventilation pipe installation, there are design changes must occur or technical changes to the contract notice or approved visa. 2.2 duct system before construction, construction units and construction units should, supervision, general contracting and design units to coordinate with other pipeline piping duct position to approve the reserved and cavity. Construction should