Before, Mr. Deng's workpieces were prone to yellowing and discoloration after high-temperature nickel plating.As this will seriously affect the weldability of the tin coating on the workpiece, Mr. Deng wants to find a high-temperature nickel plating additive with good performance.
In the past month, the coating of terminal pieces produced by Mr. Duan has always been foggy after bright tin plating, and the inspection and treatment of the plating solution have not solved the problem.So Mr. Duan wanted to find a kind of methylsulfonic acid tinning brightener with good performance and not easy to fog.
Recently, the black passivation coating of galvanized workpieces produced by Mr. Zhang always has flow marks, and the appearance is not very uniform, which can not meet the requirements of Foxconn.In order to keep the order, Mr. Zhang wants to quickly replace a trivalent chromium black zinc passivation solution that will not have flow marks.
