SLT Publications (Pvt.) Ltd, popularly known as RAINBOW PAGES is the publisher of the comprehensive National Business Directory – SLT RAINBOW PAGES and holds the unique position of being the foremost Directory publisher in Sri Lanka. SLT has a proud history of Directory publishing dating back to the late 1930's. During the early days, information was disseminated to the public via the printed book. This directory which is a statutory requirement is circulated to all the fixed line telephone subscribers in Sri Lanka and contains valuable information on Residential Telephone Numbers, Government Organizations and Business Organizations. It also includes the Doctors Directory and the Architects Directory and also contains the Rainbow Pages, which is the ultimate guide to anyone seeking contact information on any topic.