This document specifies the energy efficiency limits, energy efficiency grades, test methods, and inspection rules for range hoods for household and similar purposes, AC ventilating fans (hereinafter referred to as 'ventilating fans'), and multi-functional appliances with ventilating functions. This document applies to external exhaust range hoods installed on top of household cooking stoves, cookers, or similar appliances with a rated voltage not exceeding 250V, as well as ventilating fans driven by electric motors and multi-functional appliances with ventilating functions that meet the following conditions: single-phase rated voltage not exceeding 250V, rated ventilating input power not exceeding 500W, impeller diameter not exceeding 500mm. This document does not apply to commercial range hoods and other commercial cooking fume exhaust devices. This document does not apply to ventilating fans for the following purposes: a) Ventilating fans specifically designed for industrial use; b) Ventilating fans intended for use under special conditions, such as places with corrosive, flammable, explosive gases, dust, steam, or gas; c) Ventilating fans used in refrigeration equipment, air conditioners, and air-air energy recovery devices; d) Ventilating fans embedded in appliances (such as stoves and microwave cooking appliances); e) Marine ventilating fans; f) Type C ventilating fans, bidirectional air outlet ventilating fans, and Type B and Type D ventilating fans with a maximum…