Internal
Internal transistor, tag heuer watch repair semiconductor device development started 60 minutes mid. Early 1965, China successfully developed the semiconductor factory bell bell for the domestic watch industry, fills a void, is listed in 3000. 1966 "Cultural Revolution" began, the plant production to a standstill semiconductor clock. November 1965, Shanghai, the fourth clock factory developed a transistor clock. tag heuer watches for women Development and production in 1969 and a single set (without alarm) transistor clock hairspring balance. Since 1974, they have a license to develop and produce horseshoe clock radio clock, the two-band clock radio, JSN-1-type AC-DC dual radio alarm clock and calendar B - 841 portable radio alarm clocks. 1965 to 1990, cumulative production of all kinds of Shanghai watch industry semiconductor, transistor clock 8615000. 3. Quartz alarm clock in the development of electronictag heuer watch repair san francisco e-Zhong Shiying began late 70s. In 1979, the fourth bell Shanghai Institute of Plant and Shanghai to jointly develop ZSZ Watches Quartz Analog electronic clock type to be successful, the error at 10 seconds. And also use their movement to further develop table plaque, vertical, desktop alarm clock and other 40 kinds of colors.