Certificates of builders, surveyors and materials engineers are the most basic. Basically, as long as you go to the construction unit or supervision company and other engineering-related companies to work, the company will help you sign up, and some companies can give you the certificate directly. About every certificate is around 200 yuan, and there are places to register in universities. You can copy the answers directly when you go to the exam, and some even bring books to read. The topic is simple.
You can ask the local construction management center for details.