| 摘要 |
An electroplating bath for depositing lustrous tin which bath contains bivalent tin ions, sulphate, sulphonate, sulphamate or fluoborate anions, a surface-active substance, a lustering agent of an unsaturated character having aldehyde or ketone groups and a compound of the type IN WHICH N=1, 2 OR 3 AND R1 and R2 represent hydrogen, alkyl, or combined represent a ring system.
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