Etching Technology Michael 2018-03-12 22:57 A20180311003 進階 點閱 177 留言 0 E 0 T 0 免費 進階 點閱 177 留言 0 E 0 T 0 The process utilizing the chemical reaction with material to dissolve and remove the unwanted portion in material is called "etching." There are two types of methods, i.e. wet and dry etching. (共同作者:Hightech)