1958 TTIC was established.     1959 Technical cooperation with NEC began with such products as communication equipment, Telephone #4 and Switcher Model A.     1966 TTIC became a Tatung Company subsidiary, capitalized at US$711,000. It succeeded in developing the step-switcher.     1967 Capital was increased for purchase of additional equipment to fulfill governmental project to localize production. Telephone #600 successfully developed.     1969 Cross-bar exchange system was produced. Carrier transmission equipment was developed. Plants were expanded and additional high-precision machines were installed.