... all processings in-house ,including electronic IC/PCB design, offset colorful printing , molding,die cast,package,QC etc.In order to ... from our good production and services.Item Name: 3D Electronic Poster ,Educational Poster, Kids Early LearningTHe chart Encourages children ... *4 cmBattery: (Not included). 1. Material: PVC , Paper, and electronic elements, IC, PCB, etc. . 2. Various Size available: 42 ...