Companies with good management, perfectly elegant working environment, gathered a group of high-quality marketing and research and development personnel. Faced with growing high-tech market, for the company to better development and survival, the company will continue to discover and develop new products. Now the company has with the German Kenai Front (okonoff) company, Prairie Hill (PRESSURE) Company, Shanghai Haiying Machinery Plant signed a cooperation agreement, and became the distributor of the three companies in Hubei Province. Smoke control system can be divided in general and exhaust systems and smoke control system. Smoke control system uses pressurized air supply means or natural ventilation to prevent the passage of smoke into the evacuation system; mechanical exhaust from the exhaust system or natural ventilation, the smoke discharged to outside the building system. Mechanical smoke control systems smoke control system mechanical smoke control systems, fire damper effect, are made to send the exhaust pipe, tube wells, fire dampers, door switch equipment, delivery, ventilation and other equipment. Smoke control system set up in the form of pressurized stairwells. The amount of smoke mechanical exhaust systems and smoke partition has a direct relationship. Smoke damper means mounted on the exhaust system pipe, usually was turned on, the day the door damper, fire when the temperature reaches 280oC gas pipeline automatically shut down in a certain period of time to meet the fire resistance stability and fire integrity requirements . Role play the role of smoke fire retardant fire damper valve air exhaust system of a complex, intricate piping. In the air supply system, fire dampers fan, blower wind sent to be distributed through the main pipe to each branch pipe; in ventilation or exhaust system, wind or smoke pooled by the branch after the main channel into the exhaust fan discharge. So, whether it is air system or exhaust system, if there is no barrier, then the supply and smoke can not control, damper structure, no air or exhaust parts of a large number of air supply, exhaust situation, and need air or exhaust air is not part of, or just a small amount of exhaust air, exhaust. In order to not require air, exhaust pipe parts cut off, requiring the valve means. Dampers | Wuhan Han Wei Li Yuen (certified) | Tianmen dampers provided by Wuhan Han Wei Liyuan heating Equipment Co. Wuhan Han Wei Li Yuen-being of Equipment Co., Ltd. (www.whhwly.com) is a leader in Wuhan, fans, ventilation equipment, over the years, the company is implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customers needs. In Wuhan Han Wei Li Yuen leadership with the staff warmly welcome all inquiries negotiations to create Wuhan Han Wei Li Yuen better future.