The Bangkok branch was established on October 10, 1947, and was named after the Bank of China at that time. The branch was located near Bangkok Railway Station.

 In 1992, the premises were moved from Chinatown to the current location on Sukhumvit Road in Bangkok. The premises were purchased for own use and expanded to serve Taiwanese businessmen.

 On August 8, 2005, it was restructured as a subsidiary bank of ICBC's 100% investment in Thailand, and renamed as International Commercial Bank of China Public Co., Ltd., the original Bangkok branch was restructured into the subsidiary bank’s Bangkok head office, and Chonburi Branch was established at the same time.

 On August 21, 2006, it was renamed as Mega International Commercial Bank Public Co., Ltd.

 Established Bangna branch on October 30, 2006.

 Established BAN PONG branch on May 17, 2010.

 RAYONG branch was established on April 18, 2014.

✽Service

According to the business license issued by the Ministry of Finance of Thailand, the bank has a Full Banking Business License, which can engage in the following businesses:

 Loan
 Including overdrafts, discounts, turnover loans, foreign sales loans, purchase materials loans, development guarantees, development of Stand-by L/C and accounts receivable offtake business (Factoring) services, etc.

 deposit
 Including Thai currency, U.S. dollar current deposit, check deposit, fixed deposit, salary transfer business.

 Foreign exchange
 Including import  opening L/C, collection and export billing, collection business.

 Exchange
 Including outgoing remittance business, foreign currency cash, and cashing of traveler's checks.

 Outward remittance may include:
 Various currencies such as U.S. dollars, Japanese dollars, and Euros.

 The inward remittance may include:
 Remit U.S. dollars and other foreign currencies or buy Thai dollars in Taiwan dollars from domestic branches to directly remit Thai dollars.