1978 The company was established by Massa, and mainly produced single function machines, special purpose machines and boring machines.
1981 Due to plant expansion, the company moved to Kaohsiung County, and extended business domain upgrading to automatic machines and their accessories, such like transfer machine, milling head, sliding table, piston machinery and etc. On the other hand, the company also started to concentrate in machines standardization and application of integration between You JI machine and automatic manufacturing system. Especially in term of CNC Turning Lathe.
1991 Successfully researched and developed medium-sized CNC vertical turning lathe (model YV-320A), the first of its kind ever made in the industry in Taiwan.
1992 Horizontal Turning Lathe with Hydraulic Turret design was submitted to the domestic market . You Ji has been the first company successfully to develop and build hydraulic system into CNC lathe in Taiwan. In the same year, the second factory was established and You JI started to export its products into global market.
1994~1997 More than 20 exclusive local agents and all over the world had been established. For the machine R& D, You Ji carried on to upgrade and develop new model of machines especially for CNC Vertical Lathe in order to meet customers' full range requirement.
1998 The company grew up steadily even the pressure of Asian economic crisis in 1998. Turnover was increased to NT$ 300 millions, the employee become 90 and another five overseas agents are recruited. Two more new models of huge size YV-2000 and YV-2500 series was submitted.
1999 You Ji started to manufacture the engine of the airplanes and became to the manufacturer of aerospace industry. The famous company use You Ji' huge CNC vertical turning lathe, such as GE company, Rolls-Royce, Aerospace industrial development corporation(in Taiwan).
2000 CNC reverse turning lathe YR-320 series was development successfully. We combined the spindle with robot, simplifies loading and unloading.
2001 CNC vertical turning lathe YV-500E2T2P series are built with innovation to provide specially designed for alloy wheel production.