ESFR Sprinklers
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Direct Manufacture Pedent Upright Sidewall Glass Bulb Esfr Concealed Fire Sprinkler Heads with Plastic Protection FrameDirect Manufacture Pedent Upright Sidewall Glass Bulb Esfr Concealed Fire Sprinkler Heads with Plastic Protection Frame
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Glass Bulb Type Esfr Upright/Pendent Fire SprinklerGlass bulb type ESFR upright/pendent fire sprinkler Introduction ESFR,early suppression fast response spinkler is one ki