The next thing is it is a good idea to etch the surface a little bit etching could be done by putting it in a piranha solution concentrate HNO 3 and Hydrogen Fluoride HF these are the ones which kind of make the surface little rough.
HNO3 અને હાઇડ્રોજન ફ્લોરાઇડ જે સર્ફેસ ને થોડી ખરબચડી બનાવે છે.