... linersLiner Shaped or glued SWL500kg or as you needSafe factor5:1(single use) or 6:1(multi-trip)Material ... AS3668-1989 ASTM154-066 Tips on how to purchase big bags1) If you use PP big bag before , we ... do as your exact requirments .2)If you use big bag before , you can supply sample for us to produce ... accoringly .3If you never use big bag before , we can design according ...