Texas Shenglong ventilation and air conditioning plant is the first dedicated in the production and sales of central air-conditioning and ventilation equipment design and construction, tank centrifugal blower, centrifugal exhaust fan, low noise centrifugal fan, modular centrifugal fan, 4-72 centrifugal fan, plenum, micro-perforated muffler such as product development, high-tech enterprises residual pressure valve manufacturing and services, research and development of hammer-type residual pressure valve over the years, so we offer a lot of security in the central air-conditioning end technology credible the products. Fire residual pressure valve is one of the products of fan coil project must, in the ventilation industry, we often will the residual pressure valves and dampers to make a comparison, in fact, fire dampers and fire residual pressure valve is to maintain a certain indoor static pressure, air-conditioned rooms and exhaust systems to achieve a positive pressure room without energy provided automatic control equipment. 70 degrees fire residual pressure valve, Shenglong air conditioning, Huairou residual pressure valve provided by the Texas Shenglong ventilation and air conditioning plant. Texas Shenglong ventilation and air conditioning plant (www.fengguan666.com) (www.dzsltfkt.com) in Shandong Province, Texas Teng Chong Industrial Park. Scraps and development in the wave of market economy, the current Shenglong air conditioning has a high profile in fan, ventilation equipment, and enjoys a good reputation. Shenglong air conditioning made the whole network business alliance certification, marking our service and management level has reached a new height. Shenglong air conditioning all the staff willing to work with all people of insight and common development, for a better future.