DB44/T 438-2007 standard specifies the technical requirements and test methods for automotive aluminum alloy wheel film. The standard covers the film's Appearance mass, thickness, adhesion, corrosion resistance, abrasion resistance and other performance indicators, and clarifies the test methods and evaluation standards for each performance. Through systematic requirements for film performance, the standard aims to improve the protective ability and decorative effect of aluminum alloy wheels, prolong their service life, and meet the needs of the automotive industry for product mass and safety. This standard is applicable to mass inspection of automotive aluminum alloy wheel manufacturing and related fields, providing scientific and technical basis for production enterprises and inspection institutions.