the words "China Famous Wine" are written on the bottle cap. Since March 1987, 5mL bottles of Jiannanchun wine have been sealed with anti-theft seals. The cover is ivory aluminum with a total diameter of 2.9cm, which are marked with two registered trademarks, namely "Changjiang Bridge Brand" for export and "Jiannanchun Brand" for domestic sales. The upper part of the bottle cap is marked with the words "Jiannanchun Winery in Mianzhu, Sichuan, China" in red, while the middle part is marked with the words "China Famous Wine", "MIAN ZHU JAN NAN CHUN WINERY" and "SICHUANCHINA". The broken line is below the English word. When the cap is used, it will automatically break .5cm from the broken line, so that the total height of the bottle cap will be reduced from 3.3cm to 2.8cm, which is used as a sign of opening.