1, silicone combines the characteristics of inorganic materials and organic materials, and has the advantages of low surface tension, low viscosity-temperature coefficient, high compressibility and high air permeability, and its natural price is relatively expensive; Polysilicon, however, is only chemically active and has little effect, so it is naturally worthless.

2. Silicone is a compound of silicon and carbon extracted from molten elemental silicon, which is difficult to extract and rare, so it is very expensive; Polycrystalline silicon is just ordinary elemental silicon, which is relatively common and inexpensive.