Expanded graphite and metal net as unit for electromagnetic shielding was added to ABS resin,the electromagnetic shielding composites was prepared by blending,extrusion and injection molding process.The influence of content of expanded graphite,composite material thickness and mesh number of metal net on shielding effectiveness of composites was studied.The results show that shielding effectiveness of composites gradually augmented with the increase of expanded graphite's content and composite material thic...