1, raw materials: Longhekuan chooses water, rice, bran and other ingredients, Longmen Rice Vinegar takes high-quality rice as the main raw material, compared with Longhekuan's raw materials are richer.

2. Taste: Longhekuan has mellow vinegar aroma, bright color and fresh and dense taste, Longmen rice vinegar has soft taste, so Longhekuan is better.