... G3321/3322, EN10169, ASTM A7553. The content of the material:DX51D +AZ4,.Surface treatment :Dry,chromate ... lampshade, chifforobe, desk, bed, locker, bookshelfCARRYING TRADEExterior decoration of auto and train, clapboard, container, isolation lairage, isolation ... sheets 6.Certificates and Honors:SGS Detection Certificate of SONCAPISO9001-2008 Quality Management SystemISO14001-2004 Environment ...