Imaging yourself as the manufacturer of ThinkReality a3 smart glasses. Explain your supply chain starting with the material you sourced such as battery, circuit board and lenses and ending with the product in the hands of the end user. (We recognize that the supply chain would also have to handle reverse logistics as well as maintenance, but we will set that aside for now.) Explain each facility in your supply chain and the transportation link between each node. For each facility, give an approximate location and the inventory method you would propose. For each transportation link, provide the mode of transportation and an educated guess for how long the shipment would be in transit.