*ISO9001,ISO14001,RoHS,CCC,CE*15 years life at leastÿVacuum tubes use highborosilicate glass double-tube co-axial and adapt optical interfernece gradual change of SS-C/CU coating tevhnology. (STRUCTURE: Glass/CU/SS-ALN(H)/SS-ALN(L)/ALN).ÿÿÿ Through the interlayer, vacuum has an unique effect of thermo, with its temperature up to 400 degree of idle sunning, performing a strong heating abilitty.ÿÿMaterialÿOuter tank:ÿPVDF / Colored galvanized steel plate / SUS 304-2B stainless steel / Wiredrawing plateÿInner tank:ÿSUS304-2B stainless steel with CNC processing and Aotomatic argon-arc weldingÿInsulation:ÿ50/55mmÿPUF withÿone-time filling&shapingÿtechnologyÿto the density of 35~40kg/m3ÿFrame:ÿColored galvanized steel plate / Aluminium alloy / SUS 304-2B stainless steelÿÿFeaturesHigher efficiencySimple configurationSilicon rings to connect and seal themAutomatic controllers can be applied to these systems or withÿan assist tankElectrical heating element | Mg bar is optional