Geneiii Bio-tec Co., Ltd.

GeneIII Bio-Tec Co., Ltd. trades in Chinese as Jiangsu Junsan Biotechnology Co., Ltd. and has its offices at 6 Xuzhuang Road in the Xuanwu District of Nanjing, Jiangsu Province. The company develops, manufactures and sells L-ergothioneine, and its website was filed in 2022.

Production uses biosynthesis rather than extraction from mushrooms. The company runs a large-scale Bacillus strain screening platform and ferments the amino acid derivative directly, which yields only the natural L form. It reports a purity of 99.99 percent verified by third-party testing. Material is sold as a raw ingredient to skincare and supplement manufacturers, and the company also sells finished ergothioneine capsules under the GeneIII name at 30 and 60 milligrams per capsule.

The company was a lead drafter of the Chinese group standard for ergothioneine as a cosmetic ingredient, numbered T/FUSAD42-2023. It has registered human clinical trials on the Chinese Clinical Trial Registry, including ChiCTR2400093739, and has research agreements with academic groups working on the compound. In January 2026 it announced that its L-ergothioneine had completed a United States FDA GRAS notification, with an approved level of 150 milligrams a day.