Birchtech Corp. is a specialty activated carbon technology provider that supplies mercury emissions capture solutions to coal-fired power plants and is developing water treatment products for PFAS removal. The company's core business generates revenue through sales of proprietary sorbent materials and ion exchange resins, licensing of patented technologies, patent litigation settlements, and consulting services delivered through in-house Design Centers. Its mercury business serves the United States and markets subject to the Minamata Convention, while its water treatment business targets municipalities and industrial customers facing regulatory compliance requirements for PFAS contamination.