Thethreeprojects——“Synthesisofdimethylcarbonatethroughureaalcoholysis”,“CleanprocessandcatalystforMDIproduction”and“Synthesisofdiphenylcarbonatethroughtrans-esterification”——jointlyperformedbyChengduOrganicChemicalCo.,Ltd.,PetroChinaUrumqiBranchCompanyandPetroChinaJilinBranchCompanyhavemetthetargetsspecifiedinthecontractandpassedtheexperts'acceptancecheckorganizedbyPetroChina.Thesethreeprojectsrepresentacleanproductionprocessthatappliesureaordimethylcarbonateinlieuofphosgeneasthefeedstocktomakedimethylcarbonate,