Hangzhou Long Song Electronic Technology Co., Ltd is mainly engaged in intelligent control systems and intelligent reserve power of electric doors and windows’ research and production. Our company according to the needs and trends of today&＃039;s domestic and foreign electric doors and windows reserve power market, and the most of the current reserve power exist high energy consumption, high cost, no Intelligent storage and other issues, cause the electric doors and windows not only cannot make people&＃039;s lives more convenient, but also bring a lot of inconvenience. As a result ，it make the vital interests of the consumer suffer losses and manufacturers face considerable sales difficulties. In order to overcome these problems, and maintain the benefit of consumers and manufacturers. After years of meticulous research and development, and use the computer chips of U.S. imports to deal with intelligent control systems and intelligent energy storage. Developed intelligent remote start (RML Series, the RJL Series, RMH series, JM series, JMDC series) and energy-saving hand start (HAK series) Emergency smart reserve power. As its intelligent design, compared with the traditional torsion spring or hand-cranked mechanical, its installation is more simple and convenient，and improve the efficiency and security.