Don’t apply for a card like this, it’s very risky. You’d better go to the counter to apply for it directly. If the unit can’t issue a certificate, you can also apply for it if you have a car or real estate. The China Construction Bank I know can do it with a driving permit. Or if the real estate certificate is used as proof to apply for a credit card

Wish you good luck

Find an employer to issue a certificate. You won’t be responsible for it. If it doesn’t work, you can carve a stamp and issue it yourself. A proof