6、letuslaythefoundationsforpreliminaryprocessdesignthroughtheanalysisofthesubject,accesstoinformation,schemecomparisonandaseriesofrelatedoperation.Itisofgreathelpforustodevelopindependentthinking,attitudeandpavethewayforustojobengagedinthefuture.Ethyl acetate is an important organic solvent. Pure
7、 ethyl acetate is a kind of important organic solvent and organic chemical raw material, and is widely used for cellulose acetate, ethyl cellulose, chlorinated rubber, vinyl resin, cellulose acetate resin, synthetic rubber, and th