With the motto of company "Safety, Beauty and Technology must be integrated as one", we are doing to our utmost to develop and manufacture further good products in the optimized solutions so as to give the best satisfaction to our customers. We will constantly study and develop more safe and convenient DoorLock and its solution. - 1991. 06 Shinsung Electronics Co.,LTD. founded on the capital equivalent to US$60,000 manufacturing testing device of vehicle. - 1996. 04 Manufacturing relaying device of LG PCS Phone. - 2003. 08 Increasing capital as US$500,000 and changed into incorporated company manufacturing medical aids massaging vibrator. - 2006. 06 Increasing capital as US$1,000,000 and founding DM Security as a Department manufacturing variable Digital Door Lock.