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| Number | Title | Issue Date |
| 7405189 | Surface treatment composition and method for removing Si component and reduced metal salt produced on the aluminum die cast material in etching process A surface treatment composition and method for removing Si and reduced metal salt produced during etching of an aluminum die cast material (“ALDC material”) without generation of nitrogen oxide (NOx) or hydrogen fluoride (HF). In surface treatment of an ALDC mat... | 07/29/2008 |
