For ICBC to print income certificate, you can select the required amount range. The specific steps to select the amount are as follows:

1. Go to the counter or self-service machine: You can go to the ICBC counter or self-service machine in person and choose the service of printing income certificate.

2. Fill in the application form: Bank staff or self-service opportunities require you to fill in the corresponding application form. In the form, you need to provide some basic information, such as name, bank account number, printing method, etc.

3. Select the amount range: In the application form, you will see the amount option. Select an appropriate amount range as needed. The amount range can be monthly income, quarterly income, annual income, etc. The specific range is determined according to needs and bank requirements. Income certificate refers to a document issued by an employer, bank or other relevant institution to prove the income of an individual or business during a specific period of time.