Yihui casting product name: 3kg melting furnace with imported coil Main parameter: Use Instruction: MF series apply SSR controller alloy made heater with melting temp up to 1900°c, high temp proof ceramic melting chamber,high aluminum protection and other advanced,top quality components to improved it's durability and working efficiency over currant markets furnace. Warranty and guarantee: 1. Electrical control parts : 1 free year warranty. 2. Heating coils and thermo couple are consumables: 3 month free warranty, but it excludes when clients use our furnace to recover gold, silver which contains acid or alkali materials,in the case heating coils and thermo couple are not included in our warranty scope. 3. High temp ceramic chamber: 6 month free warranty. 4. All man made problems are not included in above mentioned warranty terms. . Product show: Accessories for mini melting furance: 4 options can be selected from us Click here to check all furnaces in our Ali store: http://www.aliexpress.com/store/group/Mini-melting-furnace/910452_211900384.html