Styrenharzzusammensetzungen and semiconductor carrier device

There is provided a syndiotactic Styrenharzzusammensetzung available whose resin content any of the following (A) a syndiotactic styrene polymer, (B) a rubbery elastomer having an affinity for the component (A), (E) a polymer having compatibility with or affinity for (A ), and polar group-possessing, (F) a thermoplastic resin except (a), and (G) comprises a polyolefin with an MI of at most 25, and which from 10 to 350 parts by weight based on 100 parts by weight of the resin component comprises a fibrous filler (C ) and from 10 to 350 parts by weight, based on the same, a tabular filler (D) having an average particle size of 4-700 mum and an average aspect ratio of 12 to 120, comprising. Moldings of the composition have good impact resistance, warping little, continue to have good heat resistance and other Styrenharzen inherent good properties.