配方类型：	METALS AND THEIR TREATMENT
配方说明：	Residueless Soldering Flux (U.S. Patent 2,803,572)
配方组成：	Wetting Agent/0.5 g. Hexamethylenetetramine/89 g. Water/To make 1000 cc. Hydrobromic Acid (40%)/1 cc.

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