Regulations Governing Issuance, Revocation, and Cancellation of Compliance Certification for Gasoline and Alternative Clean Fuel Engine Vehicle Emissions Inspections Article 8

When revising part of the engine family-related data for the same engine family or when adding new vehicle model, the applicant shall apply for the modification of Certificate of Conformity with the central competent authority. In the meantime, the applicant is also required to submit the comparative data being acquired before and after the modification. When all of the items affecting the pollutant emission are being verified as identical with the original engine family and being provided with the same emission characteristics, then the applicant shall be allowed to modify the Certificate of Conformity of the said engine family after being reviewed and approved by the central competent authority.