Engaged in petrochemical industry, I want to consult, what documents can I bring?

The provinces are basically the same, with a bachelor's degree, engaged in the same or similar work with this major 1 year or more, and can apply for assistant engineer. The required materials mainly include the original academic certificate, work certificate and experience summary of the post I wrote. 2~3 years after obtaining the title of assistant engineer (specifically, I forgot that it is related to your education, and the higher the education, the shorter the time), you can apply for the title of engineer (that is, the chief engineer in society, which means intermediate level), but it is difficult to apply for a senior engineer. In addition to the above requirements, it also requires work performance and published professional papers at or above the national (provincial) level. In addition, registered engineers in related disciplines need to take the national vocational qualification examination (registration is conditional) and obtain professional certificates (such as safety engineers and HSE engineers). ) After passing, it will be issued by the relevant countries, and some enterprises are willing to hire you, then you can register in China with the letter of appointment and qualification certificate, that is, the national registered engineer of a certain profession.