How should blade material and container design be matched in a commercial smoothie machine?

Match blade material to container design by testing blade strength, cup impact resistance, and sealing performance with ice cubes and frozen fruit typical of daily use. Have the supplier run the machine on that representative material and log the process data. Capture average results plus abnormal samples, since a strong average can mask unstable operation. Instead, require documented ice-crushing trials that correlate blade wear and jar stress with real frozen-fruit loads. When models look alike, compare measured application data, not motor power or nominal speed.