we need to buy 50000tons cement for seeling to liberia,we need a powerfull factory to supply to us with best price,all certificate should be prepared,and if necessary,we can go and visit the factory and place the order if the price is ok for usstandard: GB175-2007 PO 42.5quantity:50000tons for fully shippmentdestination port:Monrovia Liberiaprice level ,1-60dollars FOB china mainportTangshan Huaguo Commerce and Trade Co.,ltdcontactor:Gary Show More