LBB Specialties LLC has appointed Darren J. Birkelbach as chief executive officer. Darren J. Birkelbach Mr. Birkelbach, who joined LBB Specialties in May 2019 as president, American International Chemical (AIC), will have oversight for all commercial and operational functions across LBB Specialties, including AIC, Charkit, and future acquisitions. Mr. Birkelbach is an industry executive with more than 25 years of experience in specialty chemical distribution, and a successful track ...