Is unionpay business a regular company?

It's a regular company.

UnionPay Business Co., Ltd. is a subsidiary of China UnionPay, which was established in 2002 and is one of the important participants in the payment industry in China. As a regular company, UnionPay has business expansion at home and abroad, and is regulated and bound by relevant laws and regulations in China. Its business scope includes POS machine sales, terminal management, and providing electronic payment solutions. These businesses are legal and compliant.