The method 1, wherein the quick wet etching process comprises a step of dipping {HEAD ~ the substrate} into a wet etching tank containing {TAIL ~ an etchant} 
The method 1 , wherein the quick wet etching process comprises a step of dipping { HEAD ~ the substrate } into a wet etching tank containing { TAIL ~ an etchant }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL