I have a requirement for Ceramsite Sand with the following specifications - 1. EARTHEN WARE CERAMSITE No 4, Grade 5-10 mm Density - 550-800 kg m3 Strength - not less than 2MPa 2. EARTHEN WARE CERAMSITE No 8, Grade 10-20 mm Density - 550-800 kg m3 Strength - not less than 2MPa Please let me know your shipment terms and FOB prices.