Chemical & Petrochemical Water Treatment Companies

Litree: Pioneering Ultrafiltration for a Water-Secure World Founded in 1992, Litree has dedicated 30+ years to redefining water purification through ultrafiltration (UF) membrane technology—our core expertise and passion立升（Litree）. As a global high-tech enterprise rooted in independent innovation, we’ve evolved from a membrane R&D startup to one of the world’s leading water problem solvers, with over 146 core patents and state-of-the-art manufacturing hubs in Haikou and Suzhou, China立升（Litree）. Our signature hollow fiber UF membranes are engineered to deliver unmatched performance: 0.01μm precision removes 99.99% of bacteria, viruses, and contaminants while preserving essential minerals—striking the perfect balance between purity and health立升（Litree）. This technology powers our diverse solutions, from residential whole-house systems to large-scale municipal projects and industrial wastewater treatment, all designed for sustainability and cost-efficiency. What truly sets us apart is our commitment to making safe water accessible. We’ve completed projects serving 50,000+ residents with centralized purification systems that cut construction costs and footprint by 50% compared to traditional setups—proof that advanced technology can also be affordable. Today, our solutions reach 60+ countries, supporting 3,000+ industrial clients and millions of households worldwide. At Litree, water isn’t just our business—it’s our mission. We believe every drop matters, and we’ll keep pushing boundaries to create a future where clean, safe water is a universal right, not a privilege

Ningbo RXHL Technology Co., Ltd. is a leading high-tech enterprise in China, specializing in the research, production, and sales of advanced membrane materials and components. With a focus on microfiltration, ultrafiltration, nanofiltration, and reverse osmosis technologies, the company serves diverse industries including food and beverage, petrochemicals, and municipal water treatment.

EC Solutions is a specialized consultancy focused on electrochemical technologies for water and wastewater treatment. We believe electrochemical processes, and electrocoagulation in particular, are among the most promising technologies in the water sector today. As a rule of thumb, anything that can be treated with conventional coagulation–flocculation can be pretreated with electrocoagulation, without adding chemicals. That means less chemical handling, lower sludge complexity, and more controllable treatment outcomes. We help industries evaluate, pilot, and implement electrocoagulation as a robust pretreatment or core process for color removal, heavy metals, TSS, emulsified oils, and complex industrial effluents. If you’re dealing with a difficult water challenge and want a cleaner, smarter alternative to chemical treatment, EC Solutions is built for that.

We produce a comprehensive range of spraying solutions, encompassing everything from small-scale nozzles to large industrial spraying systems. Our diverse product line includes various types of nozzles tailored to meet the specific requirements of every application and customer need. The company was established in Milan in November 1968, focusing on distributing parts and components for fire protection systems. Over time, we expanded our offerings to include a diverse range of industrial sprayers tailored to various applications. In addition to our distribution and manufacturing of fire protection system components and industrial sprayers, we specialize in designing and producing pneumatic spray nozzles for industrial use and tank washing nozzles. Our product line also encompasses a variety of complementary accessories essential for industrial washing, including filters, spray guns, and hoses. Furthermore, we offer ejectors, blower nozzles, swivel joints, and hose clamps to provide comprehensive solutions for our customers' needs. PNR Italia is part of the Tecomec Group and oversees four other affiliated companies to form PNR Company, a consolidated reality with a significant presence on the market.

Suzhou Clarkson Carbon Co., Ltd. is a leading manufacturer of activated carbon products, serving diverse industries such as pharmaceuticals, food and beverage, and petrochemicals. With a focus on high-quality filtration solutions, the company supports municipal water treatment and environmental protection initiatives across China and the Asia-Pacific region.

Azzuro is a science-driven Solution Provider, whose mission is to help customers comply with their emission requirements. We advise, design and supply Air Pollution Control Solutions for all industries. Our biological solutions are more efficient in emission reduction, more reliable in operating and more economical than the conventional chemical scrubbers or thermal oxidizers.

Filtrex S.r.l. is a leading Italian company specializing in advanced filtration technologies for various industries, including petroleum, marine, and industrial applications. With over 40 years of expertise, Filtrex provides innovative solutions for water, lube oil, and hydrocarbon filtration, serving global markets with high-quality equipment and systems.

Eragon Enviro Tech (Xiamen) Co., Ltd. is a specialized provider of industrial water and wastewater treatment solutions, supporting engineering teams, EPC contractors, and industrial clients in solving complex water challenges. We focus on process design, system integration, equipment manufacturing, and modular system supply for industrial wastewater treatment, water reuse, ultrapure water (UPW), and advanced ZLD/MLD applications. Our solutions are applied across semiconductor, electroplating, electronics, and new energy industries, as well as other industrial sectors dealing with complex wastewater streams. We help clients improve system reliability, optimize process stability, reduce operational risks, and meet stringent discharge and reuse standards in demanding industrial environments. With in-house engineering capability and manufacturing strength, we support global partners from design to execution for high-performance water treatment systems.

CIW Techniek specializes in the engineering and realization of industrial water treatment systems for the (petro)chemical, metal, food, and paper industries. CIW designs and constructs ion exchangers, membrane systems, neutralization plants, and biological purification systems.

Ningbo Yize Filters Co., Ltd. specializes in manufacturing high-quality filtration products, including pleated filter cartridges and melt-blown filters, serving diverse industries such as pharmaceuticals, food and beverage, and petrochemicals across China and the Asia-Pacific region.

Sidon Water is a water technology company specialised in non-chemical water treatment and system optimisation. We develop and deploy advanced solutions that prevent and remove limescale, reduce fouling and corrosion, and improve the performance of cooling towers, industrial water systems, and reverse osmosis and desalination installations. Sidon Water works with industrial clients, commercial building owners, OEMs and EPC partners to deliver measurable improvements in energy efficiency, operational reliability and asset lifetime. Our activities cover the full cycle from analysis and pilot projects to system integration, commissioning and long-term performance optimisation.

We are Vetres, an Italian engineering and manufacturing company with over 30 years of experience in fiberglass reinforced plastic solutions. We design, manufacture, and install custom FRP tanks, pipes, silos, and large-scale storage systems for water, wastewater, industrial, and food-grade applications. Our strength lies in combining solid engineering, high-quality materials, and tailor-made designs to deliver durable, corrosion-resistant solutions. From detailed design to on-site construction and technical support, we work closely with clients to ensure reliable performance across the full lifecycle of every project.

Colubris Cleantech supplies high-quality water treatment plants and customized solutions for the industrial market. This includes membrane filtration (MBR, UF, NF, RO), flotation, DAF, and water treatment chemistry. Colubris provides process water, purifies wastewater, and reclaims water.

Evides Industriewater is an expert in the production, supply, and purification of industrial water. Evides supplies process water, demineralized water, and reclaimed water, and provides wastewater treatment for industrial clients.

Logisticon is leverancier van mobiele waterbehandelingsinstallaties en spoedservice. Logisticon biedt verhuur, verkoop en onderhoud van pompen, filters, ionenwisselaars en omgekeerde osmose-installaties.

RPS (now part of Tetra Tech) is an international consultancy and engineering firm. RPS provides services in the fields of environment, water, energy, and infrastructure.