LiqTech International (LIQT) Stock Price, News & Analysis

LiqTech International, Inc. (Nasdaq: LIQT) is described as a clean technology and high-tech filtration company that manufactures and markets highly specialized filtration technologies. According to the company, it provides ceramic silicon carbide (SiC) filtration technologies for gas and liquid purification. Its silicon carbide membranes are designed for demanding purification applications, and its silicon carbide filters are used to control diesel exhaust soot emissions.

The company states that it develops products using proprietary silicon carbide technology and nanotechnology, resulting in component membranes, membrane systems, and filters for both microfiltration and ultrafiltration applications. By combining its SiC liquid membrane technology with systems design capabilities, LiqTech offers modular filtration solutions for challenging water purification applications.

Business focus and segments

Based on available information, LiqTech is engaged in the liquid filtration market and the silicon carbide ceramic membrane and diesel particulate filter (DPF) market. Its product portfolio includes ceramic silicon carbide membranes for liquid filtration, diesel particulate filters, and related filtration systems. The company reports operating segments that include Water, Ceramics, and Plastics.

Within water-related activities, LiqTech highlights systems that incorporate its SiC membrane technology to address difficult water purification tasks. These include applications such as commercial swimming pool filtration, oily wastewater treatment, and water for energy and industrial uses, as described in its public communications.

Commercial swimming pool filtration

LiqTech reports a growing business in commercial swimming pool filtration systems. The company has disclosed record sales of 34 commercial pool filtration systems in 2025, describing this as the strongest year to date for its commercial pool segment. All of these systems are based on LiqTech’s proprietary QlariFlow™ commercial pool filtration platform.

According to LiqTech, QlariFlow™ systems are designed to address operational, regulatory, and space requirements of modern aquatic facilities. The systems are deployed in public swimming pools, leisure and recreational pools, and wellness facilities. The company states that QlariFlow™ systems are engineered around its ceramic membrane filtration technology and feature automated operation with modular scalability.

Industrial and oily wastewater treatment

LiqTech has announced orders for advanced membrane-based filtration systems to treat oily wastewater. In one example, the company reported an order from North Star BlueScope Steel, a U.S.-based steel producer, for a ceramic ultrafiltration system that uses LiqTech’s SiC membrane technology. The system is described as a pre-treatment step to downstream reverse osmosis, intended to handle high oil content and variability in wastewater quality.

The company indicates that its ceramics-based systems are designed to address challenges associated with crossflow filtration, including volume-related issues, while adapting to changing oil and turbid water conditions. These systems are presented as part of LiqTech’s broader focus on industrial water treatment and water for energy applications.

Marine water treatment and joint venture in China

LiqTech has disclosed activity in the marine water treatment market, including a joint venture in China named Nantong JiTRI LiqTech Green Energy Technology Co., Ltd. and references to Jitri LiqTech. The joint venture is described as focused on developing and commercializing silicon carbide ceramic membrane-based water treatment systems for marine ships in China, including marine scrubber and dual-fuel engine water treatment applications.

The company reports that it has more than 170 marine water treatment systems installed for marine scrubber applications around the world and that it holds a market share greater than 20% for marine scrubbers, including hybrid and closed-loop systems. LiqTech states that its marine water treatment systems have built a reputation over several years for efficiency and reliability. The joint venture has also broken ground on a marine-focused R&D test center and localization facility in Haimen, Nantong, and completed a regional spare parts warehouse to support marine customers in China.

Water for energy and mobile units

LiqTech describes a Water for Energy business focus that includes produced water recycling and treatment of complex industrial wastewater. The company has referenced PureFlow™ mobile units delivered to the North American energy sector, and pilot units used for applications such as lithium brine production pretreatment and oil and gas water treatment.

These activities are presented as examples of how LiqTech’s SiC membrane technology is applied to demanding liquid treatment environments, including rental-based pilot projects and full-scale systems for energy-related customers.

Ceramics and plastics activities

In addition to water systems and diesel particulate filters, LiqTech reports revenue from ceramics and plastics. The company has noted increased sales of ceramic membranes and plastics products, and describes plastics revenue growth driven by external interest, including within food processing. These activities are grouped within its Ceramics and Plastics segments, alongside water systems.

Geographic and corporate context

LiqTech International, Inc. is identified in its public communications as a Nevada corporation with its stock listed on Nasdaq under the symbol LIQT. The company issues press releases from Ballerup, Denmark, indicating operational presence there, and has announced an expanded U.S. presence with a service center in Texas to support produced water and industrial filtration solutions, in partnership with Halldor Systems. The joint venture Jitri LiqTech in China reflects its activities in the Chinese marine water treatment market.

Position within filtration and clean technology

Across its disclosures, LiqTech consistently describes itself as a clean technology and high-tech filtration company focused on ceramic silicon carbide membrane and filter technologies for gas and liquid purification. Its activities span commercial pool filtration, marine scrubber and dual-fuel engine water treatment, industrial and oily wastewater treatment, water for energy, diesel particulate filters, ceramics, and plastics.

The company emphasizes the use of proprietary SiC membrane technology, nanotechnology-based product development, and modular system design to address what it characterizes as some of the most challenging water and gas purification applications.