石油化学品工业
petroleum chemicals industry
石油替代化学品
substitutes for petroleum-based chemicals
当代石油石化
petroleum & petrochemical today
东北石油大学化学化工学院
department of chemistry
northeastern petroleum university
跨国石油石化公司
multinational petroleum and petrochemical company
兰州理工大学石油化工学院
College of Petrochemical Technology
Lanzhou University of technology
辽宁石油化工大学石油化工学院
approximate unit
petroleum chemical institute
Liaoning University of Petroleum and Chemical Technology
College of Petroleum Chemical Technology
Liaoning University of Pertoleum Chemical
School of Petrochemical Techhnology
Liaoning University of Petroleum Chemical Technology
Faculty of Petrochemical Engineering
liaoning shihua university
石油大学化学化工学院
College of Chemistry Chemical Engineering
University of Petroleum
石油化学成分
Petrochemical composition
petroleum chemical ingredient
石油化学废料处置
petrochemical waste disposal