LiqTech International, Inc., together with its subsidiaries, engages in the design, development, production, marketing, and sale of automated filtering solutions and systems in the Americas, the Asia-Pacific, Europe, the Middle East, and Africa. It operates through three segments: Systems and Aftermarket; Filters and Membranes; and Components. The company offers silicon carbide ceramic filtration technologies for liquid and gas purification, including hybrid technology membranes and aqua solutions; and diesel particulate filters for exhaust emission control solutions under the LiqTech brand name. It also provides liquid filtration systems and solutions for pool and spa water, produced water, marine water treatment for dual fuel engine vessels, and industrial applications. In addition, the company is involved in plastics manufacturing comprising machining, welding, bending, and solvent cementing. It sells its products through direct sales, systems integrators, distributors, agents, and partners. The company was founded in 2000 and is headquartered in Ballerup, Denmark.