huawei m750 rubber snap on cover case black
acrylonitrile butadiene styrene abs is a common thermoplatstic used to make light rigid molded products . it is a copolymer made by polymerizing styrene and acrylonitrile polystyrene . the styrene gives the plastic a shiny impervious surface . the butadiene a rubbery substance provides resilience even at low temperatures . abs is considered superior for its hardness gloss toughness and electrical insulation properties .