... . material: brass2. ISO9001 and ISO140013. such kind of brass burner ring is for gas stove4. market: Germany, Japan, Poland, Italy, France ... so on5. production capacity: 7,000,000 pieces each year6. main customer: Rinnai, Noritz, Ariston, Viessmann, Panasonic, Riello, Thermowatt, Fotile, Karcher ... drawings or samples and drawings are warmly welcome.. brass burner ring