LiqTech International, Inc.

LiqTech International, Inc. is a clean technology company headquartered in Ballerup, Denmark, specializing in advanced ceramic filtration technologies for gas and liquid purification. The company's core business revolves around delivering expertise and solutions for complex filtration challenges, with a mission to provide sustainable profits and growth through its innovative technologies.

LiqTech's key products include silicon carbide ceramic filtration technologies, such as hybrid technology membranes and aqua solutions, and diesel particulate filters (DPFs) designed to control soot exhaust particles from diesel engines. The company operates through three primary segments: Systems and Aftermarket, Filters and Membranes, and Components. Its filtration systems are applied across various market segments, including commercial pools, industrial wastewater treatment (e.g., heavy metal removal, acid purification), marine water treatment for dual-fuel engine vessels, and oil & gas applications like produced water, MEG recovery, and injection water. LiqTech also has a plastics manufacturing segment.

Recent notable developments for LiqTech International include securing a commercial order in June 2026 for four water treatment systems for EGR-equipped vessels in China and announcing the pricing of a $20 million underwritten public offering of common stock in the same month. The company also reported its first-quarter 2026 financial results in May 2026 and secured a record order for 10 QlariFlow™ Systems for an Australian commercial pool project. In September 2025, LiqTech expanded its U.S. presence by opening a dedicated Service Center in Cresson, Texas, in partnership with Halldor Systems, to bolster support for its Water for Energy business segment. The company is led by CEO Fei Chen.