Q/FPT 2800001 is an enterprise standard of the Chinese commercial vehicle manufacturer Foton, and the designation is a good illustration of the Chinese system: an enterprise standard carries the prefix Q/ followed by an abbreviation of the enterprise, so that the document can be identified as belonging to one company rather than to a national or industry series, and the number that follows places it within that company's own scheme. Enterprise standards of this kind are registered with the provincial authority and are not published for general circulation, so the version a supplier works to is the one attached to the customer's engineering specification. The document states the electromagnetic compatibility requirements for the electrical and electronic components of the commercial vehicle range at their mounting positions, together with the methods by which they are verified.