This standard specifies the terms and definitions, classification, marking and examples, raw materials, requirements, test methods, inspection rules, signs, factory certificates, transportation and storage of residential kitchen and bathroom exhaust duct (hereinafter referred to as exhaust duct) products. This standard applies to exhaust duct products prefabricated by steel mesh cement or glass fiber mesh and other reinforcing material cement for shared exhaust duct systems in residential kitchens and bathrooms. Other material exhaust ducts can also be used for reference.