Tellhow Sci-tech Co., Ltd. (Tellhow) is a high technology enterprise set up and developed in Nanchang National High-tech Development Zone with the “Cooperation of Province and University1by Jiangxi Province and Tsinghua University. The company also is a key high-tech enterprise under National Torch Program approved by the Science & Technology Ministry and one of the 520 enterprises announced for the first time that “Abiding by the Contract and Keeping Promise1appraised by State Administration of Industry and Commerce. On June 1, 2001, President Jiangzemin inspected Tellhow and gave his warm care and cordial encouragement. On July 3, 2002, the company was listed in Shanghai Securities Exchange and became the first listed company in the intellectualized building electric area.