... ,000 times open/close tests. Capacity weight100- 130kg. floor spring,floor hinge, spring closer, door closer, ground hinge,ground spingcan match MAB ... popular design in South East Asia, Africa market.very good spring&oil.500,000 starting times guaranty.suitable for double swing ... with double section adjustment.OEM is welcome. V-84 floor spring, floor hinge for glass door, door closer