1. As far as I know, Shanghai Institute of Materials (China Institute of Nondestructive Testing) has the qualification certificate of China Institute of Nondestructive Testing, the qualification certificate recognized by the European Union and the training and evidence collection of American Institute of Nondestructive Testing (ASNT), among which the difficulty is gradually increasing, and the papers of ASNT are also in English.

2. Non-destructive testing is a very practical work, so each method may also be divided into castings, forgings, weldments, pipe fittings and so on. But if you have practiced and studied hard, there should still be no problem with Level 2. You can find some topics to do.

After 3~8 years of serious initial inspection, I believe you will become a qualified nondestructive testing technician.