ABS material is the graft copolymer of Acrylonitrile, 1, 3-butadiene and Styrene. Its molecular formula can be written as (C8H8·C4H6·C3H3N) X, but in fact often contains butadiene graft copolymer and acrylonitrile-styrene copolymer mixture, in which acrylonitrile accounts for 15%~35%, butadiene accounts for 5%~30%, styrene accounts for 40%~60%, The most common proportion of ABS in emulsion method is A:B:S=22:17:61, while the proportion of B in bulk method ABS is often lower, about 13%. ABS plastic molding temperature is 180-250℃, but it is best not to exceed 240℃, at this time the resin will be decomposed.