配方类型：	METALS AND THEIR TREATMENT
配方说明：	Corrosion Resistant Coating for Aluminum (U.S. Patent 2,843,513)
配方组成：	Boric Acid/38.5 Chromium Oxide/23.8 Sodium silicofluoride/38.8
配制方法：	Dissolve 10 to 80 g. of above in 1 liter of water. This coating absorbs various dyes.

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