Fitz Chem Corporation is celebrating its 20th anniversary this year with a multitude of special events planned throughout the year. Fitz Chem thanks employees, customers, suppliers and friends for all their support.      Robert Milano, marketing manager for Fitz Chem, said, “Fitz Chem Corporation was established in 1985, originally as the Donald R. Fitzgerald Company, starting with only four sales representatives and four support staff covering a three-state region, growing to the current sta...