Great coverage of EC-11 standard sprinkler nozzle and comparative performance tests conducted extinguishing foam extinguishing Hunan fm certification test results show that: the protection and EC-11 standard sprinkler nozzles provide large coverage equivalent or better. Although the standard nozzle with the coating has been made by the certification body corrosion test Henan fm certification foam extinguisher, but the test does not include all corrosive environments. Therefore recommend to the End User Advisory fm certification foam fire company, the coating is applied to a particular corrosive environments. Action: thermal expansion of liquid inside the glass bulb. When reached nominal operating temperature, the expansion of the liquid glass bubbles burst, the sprinkler nozzle action. Chengdu fm certification foam fire extinguishing foam _ _ Guangxi fm certified by the Hubei Chong Chong Electromechanical Anyuan Anyuan Electrical Equipment Co., Ltd. to provide. Hubei Chong Anyuan Electrical Equipment Co., Ltd. (www.hbcay119.com) (www.hbcay119.com) strong, credible, in Wuhan, Hubei fire equipment industry has accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead electromechanical create Anyuan into the brilliant and you work for a better future!