| 配方类型： |
INTRODUCTION |
| 配方组成： |
ammonium sulfate/10
ammonium bifluoride/15
glycerin/40
barium sulfate/15
oxalic acid/8
hot water/12 |
| 配制方法： |
earm the washed glass slightly before writing on it with this fluid.
allow the fluid to act on the glass for about 2 minutes.
this is an excellent preservative for leather book bindings, luggage, and other leather goods. |
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