Will the Immigration Bureau investigate all the materials provided in the application process of skilled immigrants in Australia? How do you usually investigate?

I will. All materials submitted by the applicant can be investigated. But in practice, not everything is investigated, mainly the applicant's work experience. There are four ways to investigate, but according to the current situation, the main ones are the following two: (1) copy the application materials and mail them to the issuing unit for verification; (2) Fax the application materials to the issuing unit for verification; (three) commissioned by the embassies and consulates in China staff to call the relevant units to understand the situation of the unit and the applicant; (4) Entrusted by the embassy in China, the staff of the embassy directly conduct on-site investigation. You can download an app in the sea and answer it online 24 hours a day to learn a lot about immigration.