Can fitter pass Grade 4 enter Shenzhen?

According to the Regulations of Shenzhen Municipality on Household Registration Management, holders of valid residence permits in this Municipality can enter Shenzhen. However, the fitter's certificate level 4 is not a strict identity document, but a vocational skill certificate. Therefore, Shenzhen household registration can not be obtained directly by relying on the fitter's certificate level 4. If you want to live in Shenzhen, you need to meet the household registration management regulations in Shenzhen, and you may need to meet certain conditions, such as holding a residence permit in Shenzhen, employment, study and investment. I suggest you consult the relevant departments in Shenzhen for more accurate information.