The corrugated medium and linerboard board are made of kraft containerboard, a paperboard material usually over 0.01 inches (0.25 mm) thick.
The panels contain cells made in China, Taiwan and, sometimes, Germany. Grape still plans to import inexpensive Chinese-made cells, and to buy Oregon-made inverters -- which convert direct current to alternating current -- for the panels it assembles in Eugene.
No matter where you grow your grape vines, you will need to put up some sort of support system. Against a wall or in a glasshouse: Use 2-3mm diameter galvanised wires stretched horizontally along the wall or between the glazing bars of the glasshouse. Space them 30cm (1ft) apart.