... is made from new nanotechnology stearin wear-resistant paint sub-light projector film, tear proof, high-definition, easily cleaned (Board ... on, and chemical resistant.The back of board is made of aluminum honeycomb board, non-transformable, blow resistance, and lasts ... to the RS232Cof 9 needlesDSP boardOnly one DSP board inside, supports hot-swapAccessoriesElectronic Pen quantity Two piecesstructure ...