... heating size: 50mm*50mm, no deformation and discoloration, use coal gas, liquefied petroleum gas and natural gas to heat. ... 600mm*400mm, no deformation and discoloration. b. Teppanyaki Grill Fuel Consumption Coal gas: 2.92 m3 per hourLiquefied petroleum gas: 0 ... and eating environment. 4.Teppanyaki Grill Certificate 5. For more information of our products, please contact me freely, thanks. BBQ grill