The first factory was established at Sapankhow under the name "Nguan Chiang Soy Sauce Factory". In order to serve the increasing demand of our soy sauce in the market, the factory was expanded continuously to Trok Chan, Sathupradit and Prapadaeng. In 1973, Prapadaeng Factory become the center of production & distribution until now. In 1982 " Nguan Chiang Food Industry Co., Ltd." was registered with capital of 20 Million Baht. The Nguan Chiang Outlet at Jaowarad is another distribution center for sales of Nguan Chiang Products.
