... : with positive and negative rotate traverse, can automatic cahnge direction*Electric control parta: Overload protectionb: Moter slow star, stepless variable speedc ... of customer:Shanghai NO.23 research instituteJinhao electric (Kingshang) CO.,LTDXiangtan hauling cable stock CO.,LTDMainyang keguang hongsheng cable CO.,LTD Multifunction highspeed winding machine