Metro Chem industries is a leading Reactive Dye manufacturer, supplier and exporter. Reactive Dyes are a class of highly coloured inorganic substances, primarily used for tinting textiles, that attach themselves to their substrates by a chemical reaction that forms a covalent bond between the molecule of dye and that of the fibre. The dyestuff thus becomes a part of the fibre and is much less likely to be removed by washing than are dyestuffs that adhere by adsorption.