china WEIELECTRIC com manmanufactureinsulation Paper Tube,G10 FR4 G11 FR5 Tubes Glass Reinforced Epoxy ,Tubes Fabric Reinforced Phenolic,Canvas C CE Fabric Reinforced Phenolic ,G7 Tubes Glass Reinforced Silicone ,G5/G9 Tubes Glass Reinforced MelaminePhenol aldehyde paper tube, Phenolic Paper Tubes,Varnished Insulating Tube,phenolic paper laminated tub,Tubes Fabric Reinforced Phenolic - natural (light tan to brown This grade is composed of a continuous woven cloth impregnated with a phenolic resin binder. This grade contains a fine weave linen and, like the canvas phenolic, is known for it's mechanical properties. The finer weave allows for machining more intricate details than Canvas, like gear teeth. This grade is not recommended for primary insulation.G10/FR4 Tubes Glass Reinforced Epoxy - natural (yellowish to light green) 
The most versatile all-around laminate, this grade is a continuous glass woven fabric base impregnated with an epoxy resin binder. It has extremely high mechanical strength, good dielectric loss properties, and good electric strength properties, both wet and dry.G7 Tubes Glass Reinforced Silicone Composed of a continuous glass woven cloth base impregnated with a silicone resin binder, this grade has excellent heat and arc resistance. It has extremely good dielectric loss properties under dry conditions and good electrical properties under humid conditions, although the percentage of change is high.we also make Dielectric Kraft tube ,Dielectric Insulating tubing,Battery sleeve tubes, Laminated tubing ,Thinwall tubing,thread tubes,spiral-wound tubes ,insulation Kraft paper tube competitive quote in china . more know of us look at web allinsulating com