Which is better, silicone, TPU or PC?

Silicone mobile phone case is easy to get dirty, especially dirty;

Compared with pc and silica gel, tpu material has moderate hardness; Division I mainly includes: clear water cover, tpu+pc double-color cover, tpu material two styles;

Pc: Spray hand oil, it feels particularly smooth and delicate; Our company mainly includes: back cover, bracket back cover, silicone +pc in one, single shell and other pc materials.