Tantech Holdings Ltd., a clean energy company based in Lishui, China, has announced that it will offer a new activated carbon (AC) product called Variety Combination Honeycomb Activated Carbon. The product is suitable for exhaust gas purification, which helps in reducing odors and pollutants, including adsorbing formaldehyde and benzene. The AC product is for the treatment of large air volumes, indoor air purification, and low-concentration factory waste gas (triphenyl and toxic and harmful gases). Tantech and its subsidiaries develop and manufacture bamboo-based charcoal; design, manufacture, and distribute electric vehicles; and have invested in the mining business.