In mainland China, the Wong Lo Kat brand is owned by Wong Lao Kat Pharmaceutical Co., Ltd. (which produces green box packaged Wong Lao Kat and Wong Lao Kat granules (Chinese National Medicine Approval No.)); in countries and regions outside mainland China, the Wong Lao Kat brand Registered by the descendants of the Wang family.

Jiaduobao, which produces Wonglaoji in red cans, is invested by Hong Kong Hongdao Group and licensed by Wonglaoji Pharmaceutical. The descendants of the Wang family in Hong Kong provide the formula. The company exclusively produces and operates the Wonglaoji brand in mainland China. Canned herbal tea (Shizihao).