Korea BC Card Company, like China UnionPay, is also a bank brand and service company, but there are differences in scale. China UnionPay is the only bank card service and brand organization in China, and almost monopolizes the RMB bank card clearing business; while South Korea BC Card Company is a national bank card service and brand organization in South Korea, but it is not the only organization, but it has a higher market share. Others include KEB cards and Lotte cards. China UnionPay has close business cooperation with BC Card Company in South Korea, and BC Card Company is an important partner in supporting the UnionPay card usage environment in South Korea.