Tom qab ib pob tau txais mus rau hauv lub warehouse, lub suab ntse-lub teeb tag txuas rau nws; Thaum tus neeg siv luam theej duab khaws QR code, nws ua rau lub suab ceeb toom, enabling "ib-thib ob pob retrieval." Nrog rau kev loj hlob sai ntawm e-lag luam, kev lag luam xa khoom nthuav tawm tau ntsib kev loj hlob tsis tau muaj dua. Raws li cov nodes tseem ceeb hauv cov saw logistics, nthuav qhia chaw nres tsheb tuav cov chaw khaws cia, cais, …