WEST CHICAGO, Ill. - MD-Both Industries has announced the appointment of Superior Materials Inc., Garden City, N.Y., as its new sales agent in the Northeast region, representing MD-Both in the states of New Jersey, New York, Connecticut, Delaware, Maryland and Eastern Pennsylvania. Superior will be responsible for sales of MD-Both's metallic inks, aluminum pigments, bronze pigments, vacuum-metallized pigments (VMPs) and Wolstenholme Inc. carbon black dispersions.