[Covering and roofing materials for tunnels and greenhouses [protected cultivation; Italy]]

abri plastique absorbance absorbancia additif additives additivi aditivos assorbanza cinc coltura protetta coperture con film plastico cultivo protegido culture sous abri fer ferro film plastico film plastique forza glass greenhouses hierro infrared radiation invernaderos iron italia italie italy plastic film plastic film covers policloruro de vinilo polietilene polietileno polivinil cloruro polychlorure de vinyle polyethylene polyvinyl chloride protected cultivation radiation solaire radiazione infrarossa radiazione solare rayonnement infrarouge serre solar radiation strength verre vetro vidrio zinc zinco