SUGAR LAND, TX — (Marketwired) — 06/12/13 — Researched by Industrial Info Resources (Sugar Land, Texas) — has remained steady in the U.S. and Canada so far in 2013. Industrial Info has tracked 20 planned and unplanned ethylene unit turnarounds to date this year. The turnaround activity included six planned events and 14 unplanned events. Most of the unplanned turnarounds were caused by power outages.Other companies featured: (NYSE:CVX), (NYSE:PSX).For details, view the entire article by su