In 2012, Asia accounted for almost 40% of the overall annual production capacity of propylene oxide (PO), which exceeded 9.69 mln tons, as per Merchant Research & Consulting. The global PO supply followed an upward trend between 2009 and 2012; during that period of time, it grew by over 1.27 mln tons and went beyond 7.76 mln tons. Asia led the global PO production, supplying over 3 mln tons in 2012. In the same year, the US, China, the Netherlands, Germany and Japan were the dominant PO manufacturing countries. The polyether polyols industry was the major PO end-user. Europe was ranked as a leading exporter and importer of PO in 2012. The global PO supply is poised to exceed 9.2 mln tons in 2017. Dow Chemical Co, LyondellBasell Chemical Co, Ellba, Shell, SCG-Dow Group, Lyondell Bayer Manufacturing Maasvlakte VOF, BASF, Wudi Xinyue Chemical Co and Ningbo Zhenhai Lyondell Chemical are among the companies capturing large market shares.