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Colas South Africa (Pty) Ltd is a specialist manufacturer and applicator of bituminous binders and slurries for road surfacing.

Tosas has a proud history spanning more than 4 decades of supplying quality bituminous products across Southern Africa. The company specialises in the modification of bitumen and produces and manufactures most types of modified binders and emulsions that are used in roads industry in the countries where it operates. With a fleet of more than 30 modern bitumen distributors, bitumen haulers, 13 mobile bitumen rubber and PMB modification plants Tosas is well placed to service the roads industry with all its requirements.