China Distance Education Holdings Limited (CDEL) is a holding company, which is engaged in providing online and offline education services, and selling related products in the People's Republic of China (PRC). The Company focuses on professional education, and helping professionals that aim to obtain and maintain professional licenses. Its content library encompasses approximately 234 course offerings, approximately 5,900 classes and over 24,000 hours of audio-video content across approximately 13 subject areas. The Company operates and manages its business through the provision of online and offline education services and selling of related products segment. Its online courses feature pre-recorded audio-video lectures. It also provides course-related support services that include online tutoring and round the clock customer service through its call center. It offers accounting courses, healthcare courses, engineering and construction courses, and other courses.