Which of the following is NOT a requirement for CNG certification?

Obtaining manufacturing licenses is not a requirement for CNG certification because the process of certification focuses primarily on the safe operation and handling of CNG equipment and systems rather than the licensing of manufacturing processes. Certification typically involves ensuring that drivers have the necessary knowledge and skills to operate CNG delivery vehicles safely, which is why passing examinations and having certification cards are important components. The need to submit specific forms, like the CNG Form 1016, is also part of the compliance and documentation process that supports the certification, but manufacturing licenses pertain more to the production aspect rather than the driver qualifications. Therefore, the emphasis is on operational safety and compliance rather than obtaining licenses for manufacturing.