1. According to the query, changchun university of science and technology shows that the major of photoelectric information science and engineering mainly involves photoelectric technology, information processing technology, control technology and other fields, which is close to that of mask aligner.

2. Electronic information engineering major: mainly studying circuit design, digital signal processing, communication principle, etc. , related to the electronic part of mask aligner.

3. changchun university of science and technology is a university jointly established by Jilin Province, the State Bureau of Science, Technology and Industry for National Defense and Changchun City. It is an implementation school of excellent engineer education and training plan approved by the Ministry of Education, and a national school for college students' innovation and entrepreneurship training.