Sanwa Bank California is outsourcing its credit card portfolio to MBNA Corp., which will market credit cards under Sanwa's name and handle operations.

MBNA of Wilmington, Del., which has similar agent bank relationships with several smaller issuers, will offer Visa and MasterCard cards to consumers and businesses on Sanwa's behalf.

Sanwa, the largest overseas subsidiary of Tokyo-based Sanwa Bank Ltd., said its credit card customers will soon get orientation packages that explain the change and describe "new products and services resulting from the alliance."

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