Thedevelopmentandcommercialapplicationoftheenergy-savingtypePTAoxidationreactioncondenserprojectundertakenbytheSINOPECShanghaiEngineeringCompanyhadpassedonMay17,2011thetechnicalappraisalorganizedbySINOPEC.Itislearnedthatthisprojecthasbeengrantedanationalpatentonpracticalnewproduct,