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BioLargo, Inc. invents, develops, and commercializes various platform technologies. Its technologies solve challenging environmental problems comprising per - and polyfluoroalkyl substances (PFAS) water contamination, advanced water and wastewater treatment, industrial odor and volatile organic compounds control, air quality control, infection control, and myriad environmental remediation. The company provides full-service environmental engineering services. The company was incorporated in 1991 and is based in Westminster, California.

Great Panther is a growing gold and silver producer focused on the Americas. The Company owns a diversified portfolio of assets in Brazil , Mexico and Peru that includes three operating gold and silver mines, four exploration projects, and an advanced development project. Great Panther is actively exploring large land packages in highly prospective districts and is pursuing acquisition opportunities to complement its existing portfolio.

Gulf Resources, Inc., through its subsidiaries, manufactures and trades bromine and crude salt, chemical products, and natural gas in the People's Republic of China. The company operates through four segments: Bromine, Crude salt, Chemical products, and Natural gas segments. It also provides bromine for use in bromine compounds, intermediates in organic synthesis, brominated flame retardants, fumigants, water purification compounds, dyes, medicines, and disinfectants. In addition, the company offers crude salt for use as a material in alkali and chlorine alkali production for use in the chemical, food and beverage, and other industries. In addition, it manufactures and sells chemical products for use in oil and gas field exploration, oil and gas distribution, oil field drilling, papermaking chemical agents, and inorganic chemicals, as well as materials that are used for human and animal antibiotics. The company is based in Shouguang, the People's Republic of China.

Comstock Inc. engages in the systemic decarbonization business in Nevada and internationally. It operates through Renewable Energy, Mining, and Strategic and Other Investments segments. It will develop technology for the deploying of extraction and refining facilities that convert wasted and unused biomass and other natural resources; and a demonstration system to extract black mass containing lithium, graphite, nickel, cobalt, manganese, copper, aluminum, and other metals from up to lithium-ion batteries. The company also owns the Lucerne Project located in the Storey County, Nevada; and the Spring Valley Project situated in the Lyon County, Nevada. In addition, it offers upstream and downstream design, engineering, fabrication, procurement, and construction solutions; and invests in non-mining real estate investments. The company was incorporated in 2008 and is based in Virginia City, Nevada.