Free Product Spec. Evaluation eVision can show you how to create your Spec Books and your 20-20 catalogs directly from one data source. We can help you get the most out of your Product Specifications by: A Leader in Web Services eVision Services is a web development company located in Lexington, Kentucky. The company was established in 2003 to provide web and catalog services to the Kitchen and Bath Industry, since that time we have expanded our service offerings to embrace all industries. .