For questions that cannot be answered through methods such as consulting technical specifications, reference source codes, certification related materials, and DRM technology service providers, please submit the questions to the DTA technical support email tech@trustdta.com, DTA will organize experts to discuss the submitted questions, and respond to the submitter. If there is a conflict in obtaining answers through the above methods, the ITU-T J.104x(DRM)/ChinaDRM standards shall prevail.