high quality and best price ISO9001 SGS Reach CAS:556-67-2 high purity competitive price famous brand great quality [Features]DY-D4 is a kind of high-purity silicone annulus. Chemical name: Octamethylcyclotetrasiloxane; Formula: -[-(CH3)2SiO-]-4, which is an important raw material of silicone products, colourless and odourless oily liquid. And it could be polymerized in silicone high polymer in ...
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