December 1997	Established of Tsukuba Software Engineering Co., Ltd. (as a base for Southeast Asia activities ) Corresponding to the Thailand domestic system requirements (System Planning - Development of Operational Support) Thai utilization of human resources to the system development needs from Japan (offshore)
February 2011	Establishment of Japanese software houses ACK Co. Ltd. and the system development subsidiary Watt software engineering as Works joint venture.
October 2014	Get the permition and support from Thailand Board of Investment(BOI) as the subsidiary operation for Japanese company. Capital increase to 8 million baht.