Medical hospital grade. Our sanitizer kills 99.9% of germs! The CDC says to make the clain "Kills 99.9% of germs" the formula must be 62% by weight which is 5% more alcohol than 62% by volume. In China the formula is registered with the FDA but the ingredients are not tested and can contain toxins and impurities. Cheaper non approved components leave a sticky residue. USA sanitizer made with Corn Ethyl Alcohol kills 99.(% of germs. China sanitizer is made with Potato or sugar alchohol.