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