Cargo trolley features and functions Machine skate application Roller skate instruction and more details Shan Dong Finer Lifting Tools co.,LTD produce all kinds of cargo trolley professionally. Cargo trolley have follow kinds via the function: veered cargo trolley which means can veered flexible when movement. Steerable machine skate, which have the operate bar to handle the direction when moving equipment. Normally have three or more sets works as one group. Crawler type roller skids, when use this kinds of roller skids the floor must be put on steel plate or U-bar to protect the floor. Geared roller skate, operate by worker to handle the operate-bar labor-saving. Widely used on lots of field area with no electric or other powers. We also have lots of other kinds of roller skids. If you have any query, please feel free let we know. We will do our best to get your satisfaction. Shan Dong Finer Lifting Tools co.,LTD Email:[email protected] http://www.cargotrolley.com/