The difference between 30-degree vinegar essence and 70-degree vinegar essence lies in the difference in concentration. 30-degree vinegar essence, also known as 30-degree ethyl acetate, has a concentration of 30% and contains 30% ethyl acetate and 70% ethyl acetate diluent. 30-degree vinegar essence is volatile, flammable and volatile, and is often used in dyeing, cleaning, solvent, medicine and other fields. 70-degree vinegar essence, also known as 70-degree ethyl acetate, has a concentration of 70% and contains 70% ethyl acetate and 30% ethyl acetate diluent. The volatility, solubility and flammability of 70-degree vinegar essence are stronger than those of 30-degree vinegar essence, and it is often used in industrial solvents, spices, coatings, inks and other fields.