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cheap stp thin vacuum insulation panelsSTP ultra-thin vacuum insulation board, also known as STP vacuum insulation board, the English name Vacuum Insulation Panel, is ultra-fine centrifugal glass fiber as the core material, add gas adsorption material, vacuum packaging by a special package to support a thermal insulation board; According to the theory of heat conduction, the high-vacuum barrier film is used to encapsulate the insulation core board in a vacuum state, so as to effectively avoid the heat transfer caused by the air convection, and achieve the effect of heat preservation and heat i