... power has been disconnected,the increased jack will not fall.only re-connected the power jack will work in accordance with instruction ... can be used at any anagle will not leak oil.jack uniform rise and fall.procuts are small, portable,easy to ... = new AE.run.minisite.productShow(); oProductShow.init( { 'aImgSrc': aBigImageSrc } ); } )(); electric scissor jack