The quality assurance engineer needs qualification and must obtain the quality assurance engineer certificate issued by the state. According to relevant public information, quality assurance engineers need to be familiar with ISO900 1 quality system, have the certificate of internal auditor, and even be able to operate the quality system independently. Proficient in quality management tools, such as statistical tools, analytical tools, CPK, PPK, and even Sima. It is required to obtain a quality engineer certificate (generally intermediate), such as a specially trained quality assurance engineer certificate in the pressure vessel industry.