A.B.S. ( ABS )

A.B.S. is a copolymer - mixture of acrylic (which gives it a high lustre and hard surface), butadiene (a rubber which adds impact strength), and styrene (a rigid, low-cost base).  Telephones, typewriters, instrument cases and household appliances are made from A.B.S..  It colors well, resists staining and solvent bands easily.  Low cost.