A method of adhering a colored electroplating layer on zinc-electroplated steel articles that utilizes an alternating current power supply which supplies electricity of frequency of 10-20 Hz, voltage of 60-120 V, and current density of 20-80 Amp/dM.sup.2 ; and an aqueous electroplating solution which...http://www.google.com.au/patents/US5275703?utm_source=gb-gplus-sharePatent US5275703 - Method of adhering a colored electroplating layer on a zinc-electroplated steel article
