1974 .02 Established the firm “Daerang Special Industrial Company” 
1989 .01

Changed the firm name and registered as corporation (Daerang Silicon Co., Ltd.)

Subscribed as a member of Korea Association of Machinery Industry




Obtained the registration certificate of Mapo Factory

Designated as a company of Promising SME

 1991 .04 Subscribed as a member of SMEPC
1992 .02 Newly constructed and completed Shihwa Factory
1999 .11 Integrated head office and factory (Shihwa Factory)
2004 .02 Obtained ISO 9001
2006 .12 Designated as an INNOBIZ company
2008 .07 Changed the firm name to “Drhitec”
2009 .08 Moved the office building to Banwol Industrial Complex
2010 .08 Established the associated research institute of company



Obtained ISO 14001

Selected as an excellent innovative company of ROK

2013 .11 Obtained the manufacturing permission of medical devices
2014 .01 Obtained the manufacturing and marketing permission of military supplies



Moved to new factory, and constructed the healing town

Opened the healing town, rest village (healing center), and private science learning institute