March 14, 2008 - ...his plastic parts will drop him and find cheaper suppliers if General Plastics Inc. in Glendale tries to pass along the higher costs.Prices for resins -- the synthetic raw materials from plastics refineries -- are at record highs, said Howard Rappaport of Chemical Market Associates Inc., a global petrochemicals and plastics consulting firm in Houston. "They are raw materials for everything from trash bags to televisions."As its margins shrink, General Plastics last year...