PioneerserieslShellmaterial:high-technologycolorplate,thicknessis0.31mm.lInnermaterial:SUS304-2Bplate,thicknessis0.41mmlBracketmaterial:domesticgoodnessgalvanizedsheet，sprayingplastics，highlycorrosion-resistant.lVacuummaterial:highborosilicateglass.lSpecificati***:.Φ47-1500mmseries：16G,18G,20G,24G,30G,36G.Φ58-1800mm,Φ58-2100mmseries:18G,20G,24G,30G,36G)