_ Damper damper plant preferred Jie Weinuo Industry (certified) _ North Star damper provided by 捷维诺 (Tianjin) Co., Ltd. Jie Weinuo (Tianjin) Co., Ltd. (www.jieweinuo.com) is specialized in the "total of flange plate duct dampers, fans, ventilation ducts, evaporative air conditioners, cable tray" of the enterprise, the company adhering to the "integrity management, service intentions, "the idea, to provide you with the highest quality products and services. Welcome to inquire! Contact: Su Wei. Jie Weinuo Industrial Co., Ltd. [] electric damper damper star recommendation, made of; galvanized steel, cold plate, stainless steel, 280 ℃ for fire smoke dampers, smoke ventilation, underground garage. Jie Weinuo is production and sales, installation of high quality integrated service offerings. Quality and timely delivery Long Industrial Co., Ltd. [Jie Weinuo star recommendation] smoke damper damper damper plant, fire parts, general machinery installed in the pipe exhaust system, usually was closed damper, when the fire turned smoke damper 70, in the exhaust pipe when the temperature reaches 280 degrees flue closed, and meet the leakage amount of smoke and fire integrity requirements within a certain period of time, from the effects of smoke fire retardant. Main material: carbon steel, galvanized steel, stainless steel.