1. After logging in to the "China Construction Bank" mobile banking app, select credit line adjustment.
2. In the line adjustment interface, the current credit line will appear. This completes the query of credit card limit.
Extended data credit line: permanent credit line or apply for temporary credit line.
Available line: decrease with consumption/cash withdrawal and recover with repayment.
Cash withdrawal amount: the maximum amount that can be overdrawn at ATM or CCB counter.
Source: China Construction Bank official website-Credit Card Channel.