It is reseached that the process of catalytic cross-bridging in synthetic ketonic residuum resin and obtained that the utility resin.
酮渣油是

产中的
业废料,经催
交联制成树脂,于经济和环保方面
有意义。
It is reseached that the process of catalytic cross-bridging in synthetic ketonic residuum resin and obtained that the utility resin.
酮渣油是

产中的
业废料,经催
交联制成树脂,于经济和环保方面
有意义。
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成,

经过人
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