Guilin sensor technology Ltd. is a high-new technological corporation. The GemRed is a high growth export-oriented enterprise at high-tech Development Zone in Guilin. The enterprise integrated the knowledge innovation, technological innovation, product innovation and operational mechanism innovation as whole. The GemRed gather a group of senior that professional engaged in the research development and application of capacitive sensor for long time. We dedicated themselves to manufacture the digital level, digital protractor and angle measuring tool series all along. For ten years GemRed has accumulated abundant academic knowledge and practice experience. In 2001, GemRed was evaluated as National Hi-tech Enterprise by Guangxi Science and Technology Ministry and has more than ten patents and one intellectual property right for IC-the core electronic component of their products in the mainland and abroad. We have the whole capacitive sensor technology series, which are all our own intellectual property right. Our main tech products as follows: Improved capacitive displacement sensor Rolling capacitive sensor Digital level obliquity sensor Draught axes capacitive sensor Complex capacitive sensor etc won 6 main invention patents. In 1997, individual high distinguish rate capacitive sensor won China invention patent. In 2003, improved capacitive displacement sensor won the U.S.A patent, filled up the blankness in this field, broke the patent barrier between China and American.