This is the 4317th most frequent Chinese word.
工行
"工行" means Industrial and Commercial Bank of China (ICBC).
In this sentence, '工行' is abbreviated to represent '工商银行', referring to the bank institution.
中国工商银行是中国最大的银行之一。
The Industrial and Commercial Bank of China (ICBC) is one of the largest banks in China.
Here '工行' specifically describes the ICBC branch where the speaker carried out banking activities.
昨天我去工行办理银行卡业务。
Yesterday, I went to ICBC to handle bank card services.
In this sentence, '工行' refers to the brand name or entity providing banking services via its mobile application.