M-PP:Mainly for metallized-film capacitor.
S-PP:Mainly for foil-film capacitor.
Capacitor Polypropylene Rough Film Type RPP/RRPP (6um --18um)
Film thickness code
The nominal film thickness is indicated by its central value (integer value,
e.g. 5,6.7 the first figure after decimal or its codes. The nominal film thickness
of this company is the Mechani-cal Method Value (MMV) under 10 layers testing.