The continuous busbar tin plating production line has changed the problem of uneven current and uneven coating in the hanging electroplating method.Under completely enclosed conditions,copper bars with a length more than 4000mm,width of 20-300mm,and thickness of 3-20mm can be continuously moved and tinned at a speed of 3-6m/min under extremely high current density through stepless speed regulation microcomputer control.The production environment is excellent (with a waste gas collection rate of over 98% and a wastewater collection rate of 100%), and no jigs are required.Multiple copper bars with a width of less than 150mm can be electroplated simultaneously.The production efficiency has been greatly improved, and the tin layer is uniform,smooth,fine and has strong adhesion and corrosion resistance.