Sang extension technology established in Guangzhou in 1995, and in late 1999, incorporated in Beijing in Beijing, China Sang Extension Maple Leaf Communications Technology Co., Ltd.. Sang technology company active in the expanding Chinese power market, the number of professional communication and automation of production with investment holding company, has formed a research and development, production, integration, system integration and marketing of high-tech manufacturers. In recent years, technology has been successfully Sang extension to the national power company offers a variety of communications and automation products, including power-line automatic meter reading system, optical fiber communication systems, computer recording system scheduling, dispatching automation system (SCAD.. (more>>)