Star Industrial Co., Ltd. [Jie Weinuo recommend spiral duct] Jie Weinuo Industrial franchise duct products; galvanized spiral duct production, galvanized duct flange plate making, galvanized angle iron flange duct production, Deng Jie ventilation installation, the company has a large spraying equipment [Jie Weinuo Industrial Star recommendation spiral duct] spiral duct leakage pipe so that the junction to minimize spiral duct 600, a typical spiral duct length is 3 ~ 6m, The typical length of a rectangular duct is only 1 to 1.5 meters long. Spiral duct 600, galvanized spiral duct preferred Jie Weinuo Industries, Ninghe spiral duct provided by 捷维诺 (Tianjin) Co., Ltd. Jie Weinuo (Tianjin) Co., Ltd. (www.jieweinuo.com) is a leader in Tianjin, fans, ventilation equipment, over the years, the company is implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customer needs. Industry leaders in Jie Weinuo staff warmly welcome all inquiries negotiations to create a better future Jie Weinuo Industries.