The interior of ethylene oxide sterilization cabinet is usually made of 304 stainless steel. 304 stainless steel has the characteristics of good corrosion resistance, high temperature resistance and easy cleaning, which is very suitable for manufacturing medical instruments and laboratory equipment. Moreover, 304 stainless steel also meets the hygiene standards, which can ensure the hygiene and safety inside the sterilization cabinet. Therefore, it can be determined that the interior of the ethylene oxide sterilization cabinet is made of 304 material.