SMTC 3800001 is a technical standard of SAIC, one of the largest Chinese vehicle groups, and the SMTC prefix identifies it as a technical standard of the company rather than as a national or industry document. Corporate standards in the Chinese vehicle industry are the ones a supplier actually works to: the national standards establish the requirements that a vehicle must meet for approval and registration, while the manufacturer's own standards set out what the components of a specific programme must achieve, and the two are not the same thing. A document of this class fixes the disturbances applied to a component at its mounting position, the levels that correspond to the position and the criticality of the function, and the test report the supplier must submit, and the applicable edition is named in the engineering specification.