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