... reliability. Customized long-life high reliability ceramic band heaters 5000w/7500w 210mm diameterHigh-temperature ceramic electric rings, heating ring, ... 500W, 800W, 1000W, 1200W, 1500W, 2000W, 2300W, 3000W,4500w, 5000w, 7500w, 10kwSeries products have achieved the following certification:1, State ... "SZHJ059322". Customized long-life high reliability ceramic band heaters 5000w/7500w 210mm diameter