Sartomer Company named Adam Oppenstein senior technical sales representative for the U.S. western region. In this position, he is responsible for sales and technical support for all Sartomer products in Alaska, Arizona, California, Hawaii, Idaho, Montana, Nevada, Oregon and Washington. He reports to John Grozak, western regional sales manager.      Mr. Oppenstein joins Sartomer after spending five years with Becker Specialty Corp. as account manager servicing the western U.S. and Mexico. He al...