Sumitomo Chemical Announces Price Increase for Polyolefins Dec. 21, 2016 Filed Under: Market Tagged With: naphtha, polyethylene, polypropylene, Sumitomo ChemicalSumitomo Chemical Co. Ltd. (TYO:4005) will be increasing its price of polyethylene (PE) and polypropylene (PP), starting with shipments from…... Please subscribe to read the full story. Subscribe Free Trial Related Articles:Imported Naphtha Drops Below $500Japanese Naphtha Prices Fall 44% Year-on-Year for April–June…Polyolefin Producers Introduce New Pricing FormulasShrinking Price Gap With Naphtha Puts Clamp on Profitability…Styrene Monomer Price Surges in Asian MarketAsian Benzene Prices Exceed $1,000 for First Time in Four…