Headquartered in Houston and incorporated since 1989, SDI is a privately held company specializing in computer graphics metafile technology. The company focuses its development efforts on utilities for graphics print processing, format conversion, publishing tools and graphics development kits. More than 10,000 sites around the world rely on SDI for graphics printing, publishing and viewing. The company supports open standards, such as the ISO computer graphics metafile. It is an active participant in organizations, including CGM Open, OASIS, Air Transport Association and POSC, to be better able to advocate and transfer new technology to customers. SDI maintains customer support locations in Houston, London and Beijing.