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By certification 
This product is a kind of high-mole-mass linear polydimethylsiloxane, applicable to production of the products such as the base rubber of silicone masterbatch and the colloidal vulcanizator, and can be used together with methyl vinyl gum to make high-tear-strength silicone rubber, low-hardness silicone rubber and sponge silicone rubber.
http://www.silimtec.com/
