MD-Both Industries and Wolstenholme International Inc. have appointed Tartan Color & Chemical, Mississauga, Ontario, sales representative for water-based carbon-black dispersion products in Canada.

MD-Both Industries, Ashland, MA, and Wolstenholme International Inc. have appointed Tartan Color & Chemical, Mississauga, Ontario, sales representative for water-based carbon-black dispersion products in Canada. Tartan Color & Chemical also is a sales representative for metallic inks, metallic pigments and oil-based carbon black dispersions supplied by MD-Both and Wolstenholme.