摘要:
A multi-layer electrodeposition coating film-forming method which comprises subjecting a cationic electrodeposition coating composition containing at least two emulsions to an electrodeposition coating, said cationic electrodeposition coating composition being such that a difference in an electrical quantity (a) required for deposition starting between a first coating composition comprising a first emulsion and a second coating composition comprising a second emulsion in two emulsions selected from the at least two emulsions is in the range of 50 to 400 C/m 2 .