Greenhouse gas verification is one of the conformity assessment activities, which mainly serves directly for the management of greenhouse gas emissions and emission reduction. It is a process of comprehensive verification and verification of the greenhouse gas emissions and related information reported by key emission units according to the greenhouse gas emission accounting methods and reporting guidelines of the industry and relevant technical specifications.

The verification procedure includes eight steps: verification arrangement, establishment of verification technical working group, document review, establishment of on-site verification group, implementation of on-site verification, issuance of verification conclusions, notification of verification results, and preservation of verification records.