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Dual Guard is designed to combination of knob and security Door guard. Let any one
can use basic lock and last lock on one time with nice grip, So enhanced convenience
let elderly, child and handicapped and make it safer.
sangmyung univ
CHEONAN, South Korea
sangmyung univ
SEOUL, South Korea
hyun suk Moon
sangmyung univ
SEOUL, South Korea
se bin Oh
sangmyung univ
KS007, South Korea
Jae woong Lee
sangmyung univ
BUCHEON, South Korea
ho sik Kang