Birchtech Corp.

LiqTech International, Inc. operates as a global clean technology enterprise, dedicated to the innovation, manufacturing, marketing, and distribution of sophisticated filtration and purification solutions. The company's reach extends across the United States, Canada, Europe, Asia, and South America, serving a diverse industrial client base. LiqTech organizes its operations into three primary divisions: Water, Ceramics, and Plastics. Within its Water segment, the company develops and supplies advanced liquid filtration systems. These systems cater to a wide array of applications, including marine exhaust gas scrubbers, the treatment of produced water, pre-filtration processes for reverse osmosis (both for potable water and seawater desalination), general industrial uses, clean drinking water production, pool and spa maintenance, food and beverage processing, filter presses, and UV disinfection systems. The Ceramics segment focuses on silicon carbide ceramic filtration technologies for purifying both liquid and gas streams. Additionally, this division manufactures diesel particulate filters, which are essential for controlling exhaust emissions in both the verified retrofit market and for original equipment manufacturers. Lastly, the Plastics segment is responsible for producing custom machined and welded plastic components. LiqTech International, Inc. engages with its predominantly industrial customers through a variety of channels, including direct sales, systems integrators, distributors, agents, and strategic partners. Established in 2000 and headquartered in Ballerup, Denmark, the company adopted its current name in October 2011, having previously operated as Blue Moose Media, Inc.

Operating throughout North America, Arq, Inc. is a specialized manufacturer of activated carbon materials. Their product range encompasses various types of activated carbon, specifically granular, powdered, and colloidal forms. Additionally, they provide Arq Powder Wetcake, which is a finely processed, low-ash particle originating from coal waste, along with additives formulated for managing air pollution. These versatile products find application in numerous sectors, including water purification, remediation of contaminated groundwater, enhancing soil composition, controlling atmospheric discharges, and as components in asphalt mixtures. Established in 1996, the company rebranded as Arq, Inc. in February 2024, having previously been known as Advanced Emissions Solutions, Inc. Its corporate headquarters are located in Greenwood Village, Colorado.

Breakthrough Chemistry, Inc. is an innovator in the chemical sector, engineering novel compounds and formulations that challenge established industry standards. Leveraging its advanced chemistry platform, the company provides critical solutions across a diverse range of areas. These include enhancing food security and minimizing spoilage, promoting natural resource conservation, improving personal hygiene, crafting protective surface coatings, eliminating unwanted odors, and facilitating chemical neutralization. Based in Bonita Springs, Florida, the organization underwent a rebranding in July 2025, transitioning from its former identity as Megola, Inc. to its current name, Breakthrough Chemistry, Inc.

Rock Tech Lithium Inc. operates in the sector of lithium property exploration and development. The company fully owns (100% interest) its key asset, the Georgia Lake lithium project, which is situated within Ontario's Thunder Bay Mining District and encompasses 277 claim units along with 41 mining leases. Incorporated in 2010, the company's corporate headquarters are located in Vancouver, Canada. It adopted the name Rock Tech Lithium Inc. in April 2010, having previously operated under the name Rock Tech Resources Inc.

USA Rare Earth Inc. specializes in the production of magnets. The company is actively developing an integrated facility that will manage the entire lifecycle of NdFeB magnet creation, from mineral sourcing and extraction to processing and final manufacturing. Within the United States, USA Rare Earth supplies its magnet products to a diverse range of sectors, including defense, automotive, aerospace, general industrial applications, healthcare, and consumer electronics.

REalloys Inc. plays a crucial role in fortifying the domestic supply chain for rare earth elements and their associated magnetic products. Its comprehensive operations span the entire value chain, from reclaiming materials through recycling and extracting them via mining, to oxide generation, subsequent metallization, alloy creation, and final magnet fabrication. This enterprise commenced operations on October 4, 2011, and operates from its corporate base in Boca Raton, Florida.