This standard specifies the technical requirements, test methods and acceptance rules for domestic gas cookers. This standard applies to household gas stoves that use city gas, including: a. Stoves with a standard rated heat flow of a single burner less than 5.23kW (4500kcal/h). b. Ovens and roasters with a standard rated heat flow of less than 5.82kW (5000kcal/h). c. The standard rated heat flow meets the requirements of a and b. d. Rice cookers with a maximum rice volume of less than 4L each time and a standard rated heat flow of less than 4.19kW (3600kcal/h). Household gas stoves that use non-city gas can be implemented by reference.