CVTC 37003 is listed on this site as an electromagnetic compatibility requirement for automotive electrical and electronic components, and it appears in the component specifications issued to suppliers of one or more Chinese vehicle programmes. Documents of this kind are internal to the purchaser and are not published, so the content available to a supplier is the version attached to the request for quotation and the interpretation agreed with the customer's engineering department; what can be said generally is that such a requirement fixes the disturbances to be applied to a component at a given mounting location and the levels that correspond to that location, and that it is paired with a test method document defining how each disturbance is generated and measured. A supplier should obtain both documents and confirm the current revision before a test plan is written.