Chemcentral has appointed Kris Weigal vice president, corporate business development. Ms. Weigal’s 19-year career began in Milwaukee as a sales trainee. She was promoted through the sales ranks, and in 1992 became sales manager. In 1996 she became general manager in Milwaukee. In 2002, she became the Midwest regional sales manager in Chicago.      In October 2003, Ms. Weigal was promoted to her present position as director of corporate business/account development....