Constant temperature, ceramic coating auliminum shell, various color, ion powder, sefty, long life, no ... 100.851.513.504410953.311.65049 oxygenated100.957.113.55048 ceramic complex aluminum pate100.957.213.5047 with stream holes100.554 ... with ceramic paint unless labeled. 2) customer fond color is possible.3) surface temperature is 220 usually, or customer required. PTC ceramic coating ...