... and luxurious cement floor ,our color sand have following characteristics:A, waterproof .the color you receive , we can take appropriate sand ... better !B, acid-alkali. If you do not have 10% of hydrochloric acid or sodium hydroxide 5%, you may do so :the consumption of ... !H, multi-species family of products , you can contract any group package ! we now have the bulk , canned , packaged products color ...