{"schema":"rootz.ai/sec-company/v1","layer":1,"cik":"0001588084","name":"TANTECH HOLDINGS LTD","summary":"Tantech Holdings Ltd is a China-based company originally focused on bamboo charcoal products and EDLC carbon technology. It has expanded into electric vehicles (EV), including autonomous street sweepers, and bamboo charcoal/wood product trading. The company operates through subsidiaries in China and has divested several business units including its EDLC carbon business, Tantech Bamboo, and Tantech Charcoal.","people":[],"products":[{"name":"Bamboo Charcoal Products","type":"hardware","description":"Bamboo-based charcoal products traded domestically and exported internationally."},{"name":"EDLC Carbon Components","type":"hardware","description":"Bamboo charcoal-based carbon components for electric double-layer capacitors; business divested in 2017."},{"name":"Driverless Autonomous Street Sweepers","type":"hardware","description":"Autonomous electric street sweeper vehicles launched in November 2020."},{"name":"Biodegradable Packaging","type":"hardware","description":"Biodegradable packaging products targeted at US and international markets via EPakia Inc."}],"partnerships":[{"partner_name":"Zhejiang Apeikesi Energy Co., Ltd.","partnership_type":"strategic","description":"Sold EDLC carbon business including IP and equipment to this PRC start-up in December 2017.","start_date":null},{"partner_name":"Aegis Capital Corp.","partnership_type":"strategic","description":"Underwriter for multiple public offerings in 2021 and 2022.","start_date":null},{"partner_name":"Maxim Group LLC","partnership_type":"strategic","description":"Placement agent for April 2024 private placement raising approximately $2.1 million.","start_date":null},{"partner_name":"Streeterville Capital, LLC","partnership_type":"strategic","description":"Issued convertible unsecured promissory note of $2,160,000 in June 2023.","start_date":null}],"affiliations":[],"origin":{"leaf":"cb542551ad4613991d7761f14c48fc13506ff788ef09fdf3ad0b76050df7590d","formula":"v2: sha256( sha256(content) || parent || source_accession )","content_sha256":"cabf8e0e0175f1a7d4c74b7b7ab4d0725fce3cb33264419315bdd58a24e19c48","parent":"f48e4382c5c66db0874d758f4b894f6b8b95683c4e0b6933d0e48de5f31f3027","source":"0001477932-25-003802","chain":"sec.gov/EDGAR (retrieved over TLS, accession recorded) > origin.rootz.global extraction > this response","registry":"origin.rootz.global","verify":"Recompute it: sha256(sha256(<this response body minus the origin block>) || parent || source_accession). 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