This standard establishes a test method for evaluating the impact resistance of rotationally molded products under specific low-temperature conditions. It primarily defines two complementary test methods: the "pass/fail method" for determining whether a sample meets the required criteria, and the "gradient method" for measuring more precise impact energy. The typical applicable temperature is -40°C, and the standard mainly applies to semi-rigid or rigid rotationally molded plastic products with a thickness of not less than 3.0 mm. Implementation of this standard requires the use of a dedicated low-temperature impact testing machine that meets specified requirements. Its core components include a low-temperature chamber capable of precise temperature control to the designated low temperature (typically compliant with GB/T 10589) and an impact testing device that allows a hammer to fall freely.