The working efficiency of a parallel manipulator with double moving platforms is better than a parallel manipulator with a single moving platform. In this study. a 2 (3HSS+S) parallel manipulator is presented. and the topology model of the parallel manipulator is established. https://www.nacrack.com/mega-choice-2005-2006-NISSAN-ALTIMA-Radio-Receiver-AM-FM-stereo-single-CD-Player-G-mega-value/