The price of Wong Lo Kat varies depending on the gift box and the self-service package. The gift box usually contains 12 cans of 310ml and costs 42 yuan. The price of 24 tubes of 310ml is usually 69 yuan.

Wanglaoji is the brand of Wanglaoji herbal tea. It was founded in the Daoguang period of the Qing Dynasty (1828). The founder Wang Zebang is recognized as the ancestor of herbal tea. It is formulated with herbal plant materials and is known as the "King of Herbal Tea". The product form has undergone carrier changes such as water bowl herbal tea - herbal tea bags - herbal tea powder - herbal tea drinks.

In addition to red can Wong Lao Kat and green box Wong Lao Kat, in October 2012, 500 ml and 1.5 liter bottles of Wong Lo Kat herbal tea were successfully launched. On December 27, 2012, the Wong Lo Kat herbal tea family added the "Three Auspicious Treasures": solid herbal tea, low-sugar herbal tea and sugar-free herbal tea, creating a new form of herbal tea products. ?

On December 3, 2014, the case of Wonglaoji v. Jiaduobao’s false publicity dispute was publicly announced in the Beijing No. 3 Intermediate People’s Court. The court ruled that Jiaduobao should stop using products containing “Jiaduobao herbal tea”. For advertisements with phrases such as "China's No. 1 Beverage in 7 Years", a statement was published in designated media for seven consecutive days to eliminate the impact, and Wong Lo Kat was compensated NT$3 million.

The Higher People’s Court of Guangdong Province made a final judgment on the “formulation plan” of Wanglaoji Jiaduobao, rejecting Jiaduobao’s appeal and upholding the original judgment. On August 16, 2017, the final verdict of the "Red Can Dispute" over Wanglao Jiaduobao was that both parties enjoyed it equally. [3] In January 2018, Wanglaoji lost the infringement case against Jiaduobao, and its demands for 300 million compensation and other claims were dismissed. On July 1, 2019, the Wong Lo Kat trademark dispute case was ruled by the Supreme People’s Court to be remanded for retrial.

In 2020, Wonglaoji will build the Wonglaoji Health Industrial Park in Gaozhou, Maoming, with a total investment of 1.06 billion!