Semi finished goods, namely, boards made of plastic for solar cells and other optoelectronic components, namely, components for LED lighting fixtures, reflectors for light boxes, reflectors for LED area lighting fixtures, and reflectors for LED platines; stuffing of plastic; stuffing materials of plastics; insulation of plastics, ceramic, silicon, and non-metals for solar cells and other optoelectronic components, namely, components for LED lighting fixtures reflectors for light boxes, reflec...