Jiannanchun Liquor is produced in Jiannanchun Distillery, Mianzhu County, Sichuan Province. It belongs to Luzhou-flavor liquor and is a good wine. It has been on the list of famous wines in China. In order to prevent counterfeiting, Jiannanchun Winery has taken a series of important protection measures for many years, which is more conducive to consumers' sensory identification of the authenticity of wine and protection of their legitimate rights and interests according to law.

(1) Bottle cap identification: Since March 1987, 500mL bottles of Jiannanchun wine have been sealed with anti-theft seals, and the lid is made of ivory aluminum with a total diameter of 2.9cm, marked with two registered trademarks, namely "Changjiang Bridge Brand" for export and "Jiannanchun Brand" for domestic sale. The upper part of the bottle cap is marked with the words "Jiannanchun Winery in Mianzhu, Sichuan, China" in red, and the middle part is marked with the words "China Famous Wine", "Jiannanchun Winery in Mianzhu" and "China, Sichuan". The dotted line is under the English words. When the bottle cap is in use, it will automatically disconnect 0.5cm from the dotted line, so that the total height of the bottle cap will be reduced from 3.3cm to 2.8cm, as a sign of opening.

(2) Identification of seal and label: Most Jiannanchun wines with specifications below 250mL are sealed with plastic lids and seal labels. The seal labels are light green with the words "Jiannanchun Winery in Mianzhu, Sichuan" printed on them, which are neat and beautiful, and the printing is clear.

(3) Trademark quality identification: All trademarks of Jiannanchun Liquor are fixed-point printing, with high and stable printing quality and clear patterns and characters. At present, the designated printing plants are Chongqing No.3 Printing Plant, Mianzhu Printing Plant and Shifang Printing Plant. Most pirated trademarks are vague or inaccurate.

(4) Identification of wine quality: Jiannanchun wine has three characteristics: strong cellar aroma, long aftertaste, mellow and sweet, crisp and refreshing. Because authentic wine is fermented in old pits and stored in clay pots for a long time, and the wine belongs to Luzhou-flavor, as soon as the bottle cap is opened, the fragrance will float all over the house. The wine has smooth taste, pure and refreshing taste, no strong stimulation, sweet aftertaste and long aftertaste. Fake wine generally has no fragrance or is not strong, and some of them are too heavy, which leads to sudden fragrance and strange smell. The color of wine is not straight, the body is mixed and the transparency is poor.

Jian Nanchun has a public quotation on the Internet.