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fireproof paper
| 配方类型： |
INTRODUCTION |
| 配方组成： |
water/100.00
boric acid/3.00
borax/1.75
ammonium sulfate/8.00 |
| 配制方法： |
the ingredients are mixed together in a gallon jug by shaking until dissolved.
the paper to be treated is dipped into this solution in a pan, until uniformly saturated. it is then taken out and hung up to dry. wrinkles can be prevented by drying between cloths in a press. |
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