[捷维诺 to recommend the star product - galvanized duct] Jie Weinuo Industrial processing ventilation pipe, automatic advantage Jie Weinuo Industrial Duct production line 捷维诺 duct prices, good production environment Jie Weinuo Duct production, installation and construction teams. [捷维诺 to recommend the star product - a unique black and white iron duct price advantage] Jie Weinuo Industrial manufacturers of ventilation ducts ten years, the company has automated equipment forward, the wind pipe coating line. Products have a total of flange duct, angle iron flange duct, spiral duct. [捷维诺 to recommend the star product - a unique black and white iron duct price advantage] Jie Weinuo Industrial manufacturers of ventilation ducts ten years, the company has automated equipment forward, the wind pipe coating line. Products have a total of flange duct, angle iron flange duct, spiral duct.