1.PC okhiye abane-transmittance yokukhanya, ukusebenza okuphezulu.
2.Izinto ezibushela ilangabi, isiqinisekiso sokuphepha, i-anticorrosion yegobolondo lensimbi engagqwali kanye nokuvikela uthuli.
3. Iqukethe indandatho ye-silicone engangeni manzi, eqinile futhi ethembekile.
Imikhiqizo ifanele ukulawula ukungena, izinto zokuhlanzeka, ezokuthutha, izinto zokuphepha, okokusebenza kwezokwelapha, izinto zasendlini, iziqalisi, njll.