... /EXWMaterialFOOD GRADE S.S.304 or red copper 2.Technical specfication Inner surfaceS.S.304,WELL POLISHED, ... polishing precision≤0.4µm,THK:2-4mmOutside surfaceS.S.304,frosted or mirror ... in the center of inside of the tankPressure 0.2MPaThermometer Bi-metal thermometerLegs 3/4 round legs, ... , welcome your inquiry!!More picture as below: Hot sales micro brewing equipment