the-innovator-of-the-construction-bricks-and-material-elevator-system-explains-how-his-prototype-works-to-prof-maloiy-in-blue-shirt-and-mr-chandaria-left

The Innovator of the Construction Bricks and Material Elevator System explains how his prototype works to Prof. Maloiy (in Blue Shirt) and Mr. Chandaria (left)

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