stainless steel body, pure copper intake nozzle, thickened aluminum plate spray coating, never rust, no sticking pot. side cooling holes, after wire drawing and polishing, are smooth and do not hurt hands. pure copper air inlet nozzle is safe and durable. the furnace plate is tightened with stainless steel screws, which can be removed at will and easy to clean. note: please do not use sharp objects to scrub the furnace plate, so as to avoid scraping and spraying and causing mucous membrane. eye shaped fire viewing hole, humanized design, convenient to observe the fire and control the temperature of food.