2008.
01. Made a contract for Incheon Subway Advertisement System
02. Attended "Digital Signage Expo" in Las Vegas, USA (booth #: 682)
05. Attended "Digital Signage Expo" in Essen, Germany (booth #: 11A.13)
05. Launched a Breathalyzer with a fuel cell sensor (alcoscent DA-8000)

2007.
11. Made a contract for Pusan Subway Advertisement System
12. Made a contract for Elevators Advertisement System in apartments

2006.
06. Appointed as Promising Expert Firm by the government
08. Certified as INNO-BIZ Enterprise by the government
08. Designated as Promising Enterprise by the government

2005.
06. Registered as Venture Business Company by the government
06. Registered ISO 9001 Certification
07. Established R&D Center

2004.
01. Made a contract for Portable Digital Breathalyzers
03. Made a contract for Automatic Safety System against Gas Leakage

2003.
05. Made a development agreement for Digital Breathalyzers
09. Made an agreement for Ticket Data Processing Device in an Express Train

2002.
02. Established DA Tech Co., Ltd
11. Developed Gas Safety Controller