Tianli Brand Duliu Old Vinegar, a famous specialty of Jinghai District, was established in Jiajing Period of the Ming Dynasty and became renowned in Kangxi Period of the Qing Dynasty as a tribute. It is one of the famous vinegar brands of China and a famous-brand product of China that looks garnet and clear and tastes sour and sweet; vinegar, which is de-fishy and de-odering, is a necessary seasoning of China. Duliu Old Vinegar is made from high quality raw materials with traditional formulation optimization. Varieties of products are not only well sold throughout the country but also exported abroad.