Shellmaterial:Adoptingaluminumalloy.Innermaterial:Adoptingcopperpipepressure-typeproductionBracketmaterial:Adoptingdomesticgoodnessgalvanizedsheet,sprayingplastics,highlycorrosion-resistant.Vacuummaterial:AdoptinghighborosilicateglassandUltra-catheterconfigurationSpecificati***:100L,200L,300L,400L,500L.)