No certificate can be universal, mainly depending on what kind of enterprise you want to enter in the future. Different enterprises use different machines. For example, Zeiss is used by European and American enterprises, Sanfeng is used by Japanese enterprises, and Tokyo Precision is used. Some domestic private enterprises, including Taiwan-funded enterprises, use Haikekang more. These brands all belong to the domestic and international market share, and the certificates issued by different manufacturers must be because of different software and hardware. The "certificate recognized by the state" you mentioned has no such concept. Each manufacturer's certificate level is still different, generally there are primary and advanced points; There is also a platform, whether it is a general module or a special module for gear measurement, or a special module for sheet metal parts, boxes, blades and turbines; Every advanced certificate is not easy to get. On the one hand, the training cost is high, on the other hand, the cycle is long. It depends on whether your company is willing to spend money to build a good platform for further study for you! It is suggested that the landlord consider his intention first, and then choose the course that suits him! According to my own experience, I still feel that as long as I get the certificates from Zeiss and HEXAGON, I will have time to study metrology training courses, take a surveyor's certificate or something, and then have a preliminary understanding of the quality management system. Speaking of the last experience, it is still very important, and I have a few more years of work experience, which is still very promising! Zeiss and HEXAGON usually have two training courses every year. For details, please contact the local offices of Zeiss and HEXAGON or their official website! Good luck to the landlord!