MOSCOW (MRC) - Last month's winter storm paralyzed the US petrochemical industry, said Hydrocarbonprocessing.Operations at US Gulf Coast petrochemical facilities have yet to fully recover one month after freezing temperatures triggered wide-spread power outages and plant shutdowns. Wood Mackenzie's olefins, polyolefins, paraxylene and purified terephthalic acid (PTA) experts look at ongoi