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