Tantech Holdings Ltd, through its subsidiaries, develops and manufactures bamboo-based charcoal products for household purification, agricultural, and cleaning uses in China and internationally. Its Charcoal Doctor brand includes air purifiers, humidifiers, automotive air purification accessories, underfloor humidity control products, pillows, mattresses, wardrobe deodorizers, mouse pads, wrist mats, refrigerator deodorants, charcoal toilet cleaner disks, liquid charcoal cleaners, shoe insoles, and decorative charcoal gifts. The company also offers bamboo vinegar, a liquid byproduct used in disinfectants, detergents, lotions, specialized soaps, toilet cleaners, and fertilizers, as well as in agricultural applications such as fruit, vegetable, and other plant fertilizers, soil conditioners and sweeteners, flower nutrients, toilet cleaning liquid detergent and solid disks, and hand washing sanitation. Additionally, it is involved in biodegradable packaging and supply chain businesses and provides commercial factoring services. Founded in 1998, Tantech Holdings Ltd is headquartered in Lishui, China.