YANTAI TRI-CIRCLE GROUP RUSHAN DOUBLE LINK CO.,LTD. WAS FIRST ESTABLISJED IN THE YEAR 1973. IT&＃039;S JEY BRANCH IF TRI-CIRCLE LOCK MFG. GROUP WHICH RANKS FIRST IN CHINA&＃039;S TEN LOCK KINGS.MAIN PRODUCTS OF THE FACTORY COVER DOUBLE LINK AND TRI-CIRCLE BRAND BRASS AND IRON PADLOCKS. LEVER DOOR LOCKS SQUARE PADLOCKS ROLL GATE LOCK ETC. ANNUAL OUTPUT OF DOUBLE LINK AND TRI-CIRCLE BRAND BRASS AND IRON PADLOCKS REACHED 50 MILLION PRECES. OVER 80%OF THE PRODUCT ARE EXPORTED, WHICH AMOUNTED TO 10 MILLION US DOLLARS PER YEAR.