Limestone required for civil constructions in Bangladesh

PLease find below the specifications and conditions
1) Product: Boulder Stone.
2) Size: ¾" & under
3) Color: Grey/Beige/Black
4) Quantity: 10 Million CFT or equivalent weight.
5) Shipment: Prompt Shipment
6) Delivery : Chittagong Sea Port, Chittagong, Bangladesh
7) Payment: 100% irrevocable L/C at Sight. Any ADD Confirmation request from Seller on L/C is Seller's option and in such case, Seller has to bare all the cost.