Zoltek Companies, Inc. : Zoltek Demonstrates Surface RTM for Automotive Body ... 4-traders (press release) Zoltek, working with partners KraussMaffei, Henkel, Chomarat and Ruhl has developed a high-speed process for the resin transfer molding (RTM) of carbon fiber/polyurethane auto body panels with Class A surfaces. Carbon fiber manufacturer Zoltek (St. |