US agrochemical company American Vanguard (Los Angeles, California) has made several appointments. James Lehman has been promoted from national sales manager to vice-president of sales. Dr Peter Porpiglia has been appointed director of product development. He was previously head of global product development for Arysta LifeScience. Jeannie Smith Hemiller rejoins the company as director of regulatory affairs. She was previously senior vice-president at animal health company StarBrands, and worked for Amvac as regulatory affairs manager in 1989-94.