Dao Minh, P., Nghiem Thi , N., Nguyen Thi, N. and Pham Ba, N. 2021. Global and Vietnam olefin and aromatic market trends under the impact of Covid-19 pandemic . Petrovietnam Journal. 7, (Aug. 2021), 31 - 43. DOI:https://doi.org/10.47800/PVJ.2021.07-04.