Valid until 65 years old.
The first-class constructor certificate is valid until 65 years old. As long as it doesn't violate the rules, basically most people don't have to worry about this problem.
There is no need for further study.
At present, there is no theory of continuing education for first-class builders in China. As long as you explain the situation to the construction department and other relevant departments, you can register it.
Apply in advance
If you need to continue your studies, remember to apply in advance. Don't be afraid if you forget. It is ok to apply within three months!
Explain the situation to the relevant departments.
If your first-class constructor certificate has expired, you can explain the situation to the Ministry of Construction and other relevant departments and apply for renewal of registration. Don't let a small registration problem block your bright future!