When using the engine family as the basis to apply for or to modify the Certificate of Conformity, the applicant shall submit the application to the central competent authority by submitting the documents and meeting the compliance requirements in Appendix 1 or Appendix 2, in the format defined in the network transmission application system designated by the central competent authority.As of January 1, 2025, the applicant shall submit the documents and the compliance matters according to the aforementioned application method and format for securing the inspection report from the inspection organization and then uplink to the Network Transmission Application System designated by the central competent authority. In this case, the expenses required for the inspection shall be borne by the applicant.Appendix 1：Documents required and the compliance matters for the Diesel Vehicle Certificate of Conformity application.pdfAppendix 2：Documents required and compliance matters for Heavy-Duty Diesel Vehicle Engine Letter of Conformity applications.pdf