Caoba Sub-branch of Yucheng Sub-branch of Sichuan Rural Commercial BankNo.: 6426530000. According to the bank number information query of rural commercial bank, the bank number of rural commercial bank in Caoba Town, Yucheng District, Ya 'an City is 642653000000. The bank number refers to the joint bank number, which is the only identification sign of a local bank and is equivalent to our ID number.