Advantage:
1.1.1 Small capacitance loss over long service time.
1.1.2 Thick coated lay facilitates metallikon, compared with Al film.
1.1.3 In time metal spraying zinc oxide makes the low resistivity
1.1.4 High dielectric strength
Disadvantage
Poor anti-air-corrosion performance, short storage time
Application
Applied to capacitors for power system, refrigerators and air conditioners
Construction