Major revisions proposed by the Draft for Comment include: 1. revising the scope of conventional energy passenger vehicles; 2. publishing the credit proportion requirement for new energy vehicles during the period between 2021 and 2023 and modifying the methods on how to calculate the credits for different models of new energy vehicles; 3. improving the guidance on fuel consumption volume for conventional energy passenger vehicles and credit flexibility measures; 4. updating the preferential treatment concerning credit assessment for small-sized enterprises; and 5. modifications in other aspects. Among others, the Draft for Comment redefines the term "conventional energy passenger vehicles" and adds the passenger vehicles powered by alcohol ether fuel to the assessment coverage. Meanwhile, links will be built between the energy conservation level of conventional energy passenger vehicles manufactured by enterprises and the carry-forward of positive credits they earn for new energy vehicles they manufacture. And the base for passenger vehicles with low fuel consumption which will be used to calculate the minimum credit requirement for new energy vehicles will be lowered.