GB/T 37499-2019燃气燃烧器和燃烧器具用安全和控制装置特殊要求自动和半自动阀国家标准
英文:Safety and control devices for gas burners and gas-burning appliances—Particular requirements—Automatic and semi-auto...
英文:Safety and control devices for gas burners and gas-burning appliances—Particular requirements—Automatic and semi-auto...