DE-Chem, LLC. has been a commercial poultry grower support services provider in the mid-Atlantic region of the United States since its founding in 1990. Operated by Tom Neal and Fermin "Claudio" Cobian with headquarters in Salisbury, Maryland. Regional suppliers of litter amendments, insecticides and rodent control products. Our skilled and qualified staff is also knowledgeable and ready to help you with water treatment services.