ethylene oxide|glycol ethers|block polyethers|pfy oiling agent|polysilicon cutting fluid|surfactant series|medicine & pesticide intermediates|glycol ether acetates-比较正规的买球软件

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   glycol ethers coating solvents...
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unsaturated block polyethers
unsaturated block polyethers of e series(mapen、apen)
unsaturated block polyethers of p series (mappn、appn)

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