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HP-RTM(High PressureResinTransfer Molding) is the abbreviation of high pressure resin transfer molding process. It is an advanced molding technology. It refers to the use of high-pressure pressure to mix and inject resin into a vacuum-tight mold that is pre-laid with fiber-reinforced materials and pre-set inserts. The resin flow is filled, impregnated, cured and demoulded. The molding process to obtain high-performance, high-precision composite products. With the advantages of high efficiency, energy saving and environmental protection, it has been widely used in automobile, aerospace, electronics and other fields.