Title: 電磁通信工事業{e51b28}{42202f}{1f631b}{243121}{515b21}{5f414b}{343521}{682e21}{4d4921}{527821}{452d21}{3a6721}{3a6d21}{3b501b}{28422e}
Subjects: Telecommunication, Job descriptions, Employees, Vocational qualifications
Places: Japan