ICBC doesn't value your work unit, unless you are in a public institution or a government agency, or you have a lot of assets or a car or a house in ICBC. If you only provide proof of work income, the amount of card approval is probably only 10 yuan, and ICBC's audit is also the result of 15.
As long as you have a work unit, ABC can apply with a certificate, but it may not be approved. The review time is the slowest, some even as long as two months, and the minimum amount is 1000 yuan.