Smile United Partnership (1999) was established on October 12, 1999. The company began by selling products related to popcorn, ranging from raw materials to equipment. These include popcorn kernels, caramel, salt, seasonings, popcorn kettles, display cabinets, and more, catering to customers such as cinemas, minimarts, and restaurants.

Later, the company expanded to support its customer base with two additional businesses:

Smile Equipment Co., Ltd., specializing in kitchen appliances and stainless steel equipment.

Tai Feng Kitchen Technology Co., Ltd., focusing on construction and store decoration.