Product name: Silicone Linear body

Molecular formula：HO-Si(CH₃)₂O[Si(CH₃)₂O]_nSi(CH₃)₂-OH

Product name: D4, also known as octamethylcyclotetrasiloxane

Molecular formula: [(CH₃)₂SiO]₄

Product name: DMC, also known as dimethyl siloxane mixed ring body

Molecular formula: [(CH₃)₂SiO]_n, n=3~6