大专以上或同等学历，相关化学，材料，金属学，焊接，工程等相关专业。

Above or equal education of college major in Chemicals, Materials, Metallography, Welding, Engineering, etc.

youdao

大专以上或同等学历，相关化学，材料，金属学，焊接，工程等相关专业。

Above or equal education of college major in Chemicals, Materials, Metallography, Welding, Engineering, etc.

youdao