Tantech Holdings Ltd (NASDAQ: TANH) ("Tantech" or the "Company"), a clean energy company in China, today announced the launch by its subsidiary, Shangchi Automobile Co., Ltd. The Shangchi SC-100A follows the launch last month of the SC-120A model featuring unmanned, automatic sweeping. Shangchi Automobile's innovative driverless and autonomous street sweepers are designed for quieter operation and improved cleaning performance, with the ability to reduce or eliminate the 7 to 8 humans required for typical sweeper vehicle operation. Lidar-based, machine vision technology provides long-distance detection and obstacle identification, with sensors for short-distance obstacle detection and avoidance. This enables the driverless model to safely and accurately operate in common environments.