日韩桃色精品,AV日韩网,国产女人精品免费网站,射久久久久久久,超碰97在线直播,思思热999re,久久大香蕉在线视频,国产视频九色在线,在线极品国产精品专区

  1. 首頁
  2. 化工助手
  3. 化學(xué)配方數(shù)據(jù)庫
  4. PAPER
化學(xué)配方數(shù)據(jù)庫
配方類型： PAPER
配方說明： Reconditioning Documents (U.S. Patent 2,576,320)
配方組成：
配制方法： When documents, letters, drawings, or other papers are photostated or blueprinted, the copies often contain "ghosts," i.e., exaggerated reproductions of folds, erasures, or other flaws in the original. A solution consisting of 35 parts glycerin and 65 parts ethyl alcohol is an excellent means for removing all traces of such flaws on the original paper. This solution is applied by brush or glass rod directly to the paper at the point of the flaw or fold. After blotting and drying, the paper will regain ist original over-all uniform appearance.

返回?cái)?shù)據(jù)庫查詢
QQ: 2241752642
微信二維碼
電話: 19906633110
广灵县| 乐平市| 灵寿县| 图们市| 永年县| 确山县| 博乐市| 辽阳市| 大冶市| 曲松县| 环江| 普宁市| 象山县| 陵川县| 唐海县| 万载县| 泸州市| 衡南县| 威宁| 南华县| 静宁县| 陵川县| 江孜县| 夏邑县| 池州市| 会理县| 方城县| 芜湖县| 望奎县| 乐都县| 长宁县| 梅河口市| 两当县| 邓州市| 永平县| 诸城市| 资源县| 界首市| 常德市| 大竹县| 天气|