How did Wang Laoji become popular again? Didn't Jiaduobao apply for a patent for red can packaging before?

Since 17, the red cans of Wang Laoji on the market have always been produced by Jiaduobao, and the authentic formula of Wang Laoji has always been in the hands of Jiaduobao. In 20 12, jiaduobao's brand right to Wang Laoji expired, so it was renamed as jiaduobao, but the taste of the formula has not changed. Now Wang Laoji's boss entrusts some food and beverage factories to process red cans, so the quality and taste of Wang Laoji are very different from before. It is wise to drink herbal tea or choose a professional Jiaduobao.