Nairobi® Professional Educational Team Member Katron Durham << BIO >> Katron Durham Nairobi® Professional Educator Nairobi Professional Educators. If you have techical questions, need Product How-to Information or have questions about Nairobi Professional Classes our Techs are available to answer your questions. Contact: The Nairobi® Professional Education Dept. Direct: 864-862-6282 Toll Free: 1-800-736-5072 e-mail: education@chapmanproducts.com