Ha Nam Ninh Trading and Production is a manufacturer and leading supplier of production and quality of stones and stone powder practicles used as cattle feed, poultry, grindstones Granito in construction, stone brick, stone glass, additive for paper, plastics, concrete and asphalt. Decorative stones, Dolomite powder, natural MnO2 manganese oxide powder used in agriculture and ceramics production... Domestic and abroad with the most competitive price.