Why does pmc recruit some undergraduates and some specialties?

The recruitment requirements of PMC will be different due to factors such as company size, business type and job requirements, so some PMC companies may recruit undergraduates, while others prefer to recruit junior college students. PMC companies recruiting undergraduates may pay more attention to students' professional knowledge and academic background, and require them to have higher theoretical level and analytical ability in order to better cope with complex engineering projects. However, PMC companies that recruit junior college students may pay more attention to students' practical skills and engineering experience, and require them to have a deeper understanding and practical experience in the construction and management of engineering projects.