Hongkong, September 22, 2021 -- UnionPay International ("UPI"), a leading global payment services provider, marked its third year of launching the Hong Kong and Macao version of UnionPay App. The 30 million UnionPay cards that have been issued in Hong Kong and Macao demonstrate the degree to which the cards have become widely accepted and a preferred choice when making payments. The launch of the localized version of UnionPay App in Hong Kong and Macao three years ago has driven the speedy growth of the local mobile payment industry, with approximately one in every four residents use UnionPay mobile payment...