Chongqing Chongyou Information Technology Co., Ltd£¨CYIT£©is in pursuit of the research £¬development and industrialization of TD-SCDMA, the third generation mobile telecom core tech. CYIT is one of the earliest companies involving in the research and development of TD-SCDMA, the third generation mobile telecom Terminal. Since 1998, CYIT has participated in the constitution of the Chinesecriteria of TD-SCDMA£¬contributing rewardingly to the confirmation of TD-SCDMA putting forwardin China as one of the three major mainstream criteria of 3G. As one of the TD-SCDMA industry allies £¬in October 2003, CYIT has independently developed the first TD-SCDMA£¨TSM£©mobile phone£¬whichhas put an end to the record that TD-SCDMA ,the third generation mobile telecom,possesses merely system without terminal. In 2004, CYIThas availed itself of the TD-SCDMA£¨LCD£©mobile phone made ofGeneral CMOS chip to realize the functionsof calling£¬called £¬sending and receiving text messages. Nowadays CYIT is centering on the mobile baseband chips and LCR protocol of TD-SCDMA£¬with the hope to develop the commercialized TD-SCDM mobile baseband chips £¬physical software £¬protocol£¬and the preliminary approach to the mobile phone reference design .