The specific differences between China Construction Bank Visa Card and UnionPay Gold Card are as follows:

1. VISA card is issued by Visa International, formerly Bank of America, established in 1959 in California, USA. State-issued Bank of America cards; UnionPay gold cards are bank cards that comply with unified business specifications and technical standards and have the words "UnionPay" in the designated position.

2. Visa cards can only be used at POS machines marked with the visa logo. It is more cost-effective to use visa cards when going abroad. The UnionPay Gold Card supports card consumption at POS machines with the UnionPay logo at home and abroad, and is suitable for use in China.