Kirdmalai, N.; Vaseenonta, C.; Nueangsittha, N.; Pujit, P.; Niljinda, S.; Junthanon, J. Research and Production of Serum Products Derived from Indigo Extract, together with a Detailed Examination of the Associated Commercial Costs. The Organic Herbal Herb Seangchan Community Enterprise Group is Situated in Sakon Nakhon Province. RJPJ 2024, 18, 163-179.