Founded in 1956, Van Diest Supply Company is a family-owned business that specializes in the distribution and manufacture of agricultural chemicals. It provides product development, formulation and liquid bulk storage services. The company operates agricultural distribution, specialty products and formulation divisions. Van Diest Supply Company also maintains a fleet of more than 70 tractors, trailers and trucks. It offers product training and stewardship programs. The company serves clients in the vegetation management and ornamental markets. Van Diest Supply Company has achieved ISO 14000 certification. In addition, it has over 10 distribution centers in Kansas, Illinois, Iowa, Nebraska and South Dakota. The company has a staff of nearly 600 individuals. Van Diest Supply Company offers herbicides under the Cornbelt brand.