Shan Yin A113 three tray size is 245*335mm, back width 5.5cm weight 0.793kg, made of extra-thick PS (hard) and good quality. Product features: Description: the file on the disk's disk is used to thicken the table made of PP material, not easily rotten, supported by steel pillar to prevent breaking, desktop stationery, easy to find. 1 the fracture resistance of pure raw materials, high degree of upright, flexible. 2 leaves a thick, flexible, solid and durable, shock resistant and strong; 3 strong and solid, assembly facilities, greater capacity, Office required!