配方类型：	METALS AND THEIR TREATMENT
配方说明：	Silver-Brazing Flux (U.S. Patent 2,478,944)
配方组成：	Potassium Borofluoride/15 Potassium Tetraborate/50 Ball mill these and then add to Water/75 Boric Acid/5 Potassium Bifluoride/30

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