ceramic heater vs electric heater

{"title":"Industry Alumina Ceramic Rings Component 95% AL2O3","imgUrl":"https:\/\/img.chinax.com\/nimg\/87\/e6\/010a29aec2aac62fe645007ccd11-200x200-1.jpg","attrs":{"Price":"Negotiation","Brand Name":"Antaeus","Model Number":"AD-B026","Minimum Order Quantity":"Negotiation","Delivery Time":"15-45 days","Certification":"\/","Place of Origin":"Hunan,China","Payment Terms":"T\/T or Negotiation","Supply Ability":"Full Supply","Packaging Details":"Inner vacuum packaging, outside carton.","Product Name":"Metallized Alumina Ceramic Rings \/ Ceramic Insulators for Battery","Material":"Alumina (Aluminum Oxide, Al2O3)","Insulation Resistance":"1000M \u03a9\uff081000VDC)","High Light":"Alumina Ceramic Rings \/ Metallized Ceramic Insulators \/ Electrical Ceramic Components","Thermal Shock Resistance room temperature to 850C":"will not burst or leak after five operations","Max. Use Temp.":"1650\u2103","Water absorption":"0","ROHS Hardness":"\u226589","Flexural strength":"550 Mpa(psix10^3)","Compressive Strength":"2600(377) Mpa(psix10^3)","Coefficient of thermal expansion":"8.2 X10^-6\/\u2103","Coefficient of thermal conductivity":"17-30.4 W\/m.K"}}