An intra-train communication network comprising a plurality of transceiver units on individual vehicles of the train. The three-dimensional structural model may be used to identify, screen, search, evaluate, or design GPCR agonists or antagonists. A preferred construction employs a 4-axis robotic arm to select KDF cases and shuttle conveyers to transfer product from the conveyers to the case-packer. By pushing the driving member, the ink member and the stamp seat can be driven to selectively pivot out of the stamp housing or be folded in the stamp housing. These groove walls or bead strips plastically deform by bending in so that each bead strip entering its associated groove is physically locked in place.