... :8~20kg/m3 From steel sheet to sandwich panel, our factory have all the production lines, so the best price&good ... and environmentalUsevarious roofs and walls referring to the large size factory buildings, storages, exhibition halls, gymnasiums etc. YX950 Model, YX1150 Model ... :+86-15966379665TEL:+86-543-2282628FAX:+86-543-2282622SKYP:helen.xinjiasteel Gold Factory, EPS Sandwich Panel