I want to find a job as a clerk. Besides knowing office software, do I need to prepare anything? I want to go to a hardware factory. Is there no one to be a hardware clerk?

Different units have different requirements for clerks. The most basic thing is office software and certain copywriting. Some units require to be cashiers, or tender documents, or other software. However, if you want to go to the hardware factory, it should be no problem. It is better to communicate with the unit and see what conditions they need. Of course, some units require you to wear several hats.