2013CJ/T 30-2013 Thermocouple electromagnetic protector of extinguishment for gas appliance
1990CJ 30-1999 Thermocouple electromagnetic protector of extinguishment for gas appliance
CJ 30-1999 Thermocouple electromagnetic protector of extinguishment for gas appliance was changed to CJ/T 30-2013 Thermocouple electromagnetic protector of extinguishment for gas appliance.