No security code required. During the activation process of China Construction Bank, a security code is not required. You only need to call a customer service phone number and fill in the validity date. China Construction Bank (referred to as Construction Bank or CCB, originally named People's Construction Bank of China, and renamed China Construction Bank on March 26, 1996) was established on October 1, 1954 (Jiawu Year). It is a joint-stock commercial bank. One of the five largest state-owned commercial banks.