... Polypropylene twin wall sheets is made of PP material,with a strong waterproof,shock cinveninent to carry,2*2mm 3mm 4mm ... ,cartons ordinary life 7 times,4*color,mostly blue,black,white(also according to customer requirements to do more all the ... ,6*foldable,collapsible storage or transport in the idle,saving a lot of space.7*has the characteristics of enviromental protection ...