Austin, TX January 10, 2011 SACHEM will exhibit at SEMATECH Surface Preparation and Cleaning Conference, March 17-19, 2012 in Austin, Texas. SACHEM experts will be available to provide an update on TMAH Safety and the Envure System™, a platform of TMAH alternatives and next generation electronic formulation components for complex cleaning, etching or stripping applications. The SEMATECH Surface Preparation…