UnionPay, also known as China UnionPay or CUP, is a Chinese financial services corporation headquartered in Shanghai, China. Established in 2002, UnionPay operates an inter-bank transaction settlement system and is the only domestic bank card organization in China. It offers a wide range of payment solutions including credit cards, debit cards, and mobile payments.

Introduction:PSE is an online payment platform that allows users to make payments through Colombian banks.

Visa is a global payments technology company that facilitates electronic funds transfers throughout the world, most commonly through Visa-branded credit cards, debit cards, and prepaid cards. Established in 1958 and headquartered in Foster City, California, Visa connects consumers, businesses, financial institutions, and governments in more than 200 countries and territories, enabling secure and reliable transactions.