1). The structure of integrated mechanic and electric, without any other controllers 2). Electronic soft-start 3). With crashworthy and self-backtrack interfaces 4). Automatic return for resistance 5). Photocell 6). Line control 7). with interf... - Update: 2009-09-16

1) Manual release 2) Machine core with compression spring, effectively avoids the accidents caused by spring breaking 3) Die-casting aluminum alloy motor, precision and good at thermal radiating 4) Motor cooling fan, solving the problem of heat-p... - Update: 2009-09-16