Our company recently have resources of Mekong river sand and salty sand. We pleasure in sending you the details that we can supply as follow:Specifications: Module of sand : up from 1.6Ability of providing: 500.000 m3 to 1.000.000 m3 per month.Origin:Our constructive sand have origin of Mekong river.Our salty sand ( smooth) have origin of Central part of Vietnam.Partial shipment & Trans - shipment : allowedIf you have demand for our sand, please contact us as email following: We look forward to hearing from you as soon as posible. Thanks and best regards.Vu Ngoc Cuong