At present, there are six major credit card organizations in the world, namely VISA International and MasterCard International, and four major professional credit card companies, namely American Express, China UnionPay Co., Ltd., Diners Club and JCB Japan International Credit Card Company (JCB).

Alumni Card of Ocean University of China is a bank card jointly issued by China Ocean University and Bank of China for teachers, students and alumni, belonging to China UnionPay Co., Ltd.