1. Class 1, 2, 3 fatigue vessels;
2. Class 1, 2, 3 heat exchangers;
3. Class 1, 2, 3 towers - pressure vessels;
4. Class 1, 2, 3 storage tanks - pressure vessels;
5. Class 1, 2, 3 low-temperature pressure vessels;
6. Class 1, 2, 3 separation pressure vessels;
7. High-pressure/medium-pressure tube and shell waste heat boilers;
8. All kinds of reaction vessels;
9. All kinds of jacketed pressure vessels;
10. All kinds of vacuum pressure vessels;
11. All kinds of agitating vessels.