About us
Hangzhou Lanran Tech stands as a global leader in the manufacturing of ion exchange membranes, with an impressive annual output of 1,850,000m2.
We specialize in delivering tailored membrane solutions and advanced equipment to meet the specific needs of our clients, combining flexibility and efficiency with exceptional service.
wholly-owned companies
6
plants
4
sales offices
3
employees
380
R&D
5 R&D centers
176 highly skilled technical professionals
43 invention patents
62 utility model patents
Lanran’s dedicated R&D team works closely with customers to develop solutions that precisely align with their application requirements. From laboratory-scale trials to pilot projects and full-scale industrial production, we offer comprehensive expertise across all stages of equipment development, including integrated modular systems.
Industry solutions
Suatainability
Sustainability drives our innovation. We develop solutions that help industries thrive while reducing their environmental footprint. From advancing the circular economy to combating climate change, our technologies focus on preserving natural resources, reducing pollution, and promoting responsible water management. Our vision is a future where industrial growth aligns with environmental stewardship, fostering sustainable progress for generations to come.
Team Building
“Industrial cleanliness, Resource Hanmony”
At Lanran, we believe strong teams create innovative solutions. Our team-building activities foster collaboration, creativity, and trust, ensuring a vibrant workplace culture that drives excellence. We cultivate the synergy to redefine separation and refine solutions, delivering cutting-edge technologies to our valued clients.
News
Turning Sodium Sulfate into Sulfuric Acid and Caustic Soda: A Large-Scale Bipolar Membrane Success Story
Turn High-Salinity Wastewater into Sulfuric Acid & Caustic Soda Onsite Lanran’s Bipolar Membrane Electrodialysis (BPED) system enables industries to directly convert sodium sulfate in wastewater into reusable industrial chemicals: Sulfuric Acid (H₂SO₄), Caustic Soda (NaOH). Reduce chemical procurement costs, minimize waste disposal, and build a closed-loop production system. Why Industrial Companies Choose BPED The industrial park in Tumxuk City hosts textile, viscose fiber, chemical, and pharmaceutical industries, generating large volumes of high-salinity wastewater, with sodium sulfate as the main component. Traditional treatment via evaporation and crystallization faces key limitations: High energy and operating costs Limited product market value High transportation and disposal expenses Continuous demand for externally purchased acids and alkalis These challenges significantly increase overall production costs for local industries. A Better Solution: Bipolar Membrane Electrodialysis (BPED) Lanran BPED technology transforms sodium sulfate into valuable chemicals directly within your plant. How does it work?Electric field-driven membrane separation converts Na₂SO₄ into: Acid (H₂SO₄) for process use Alkali (NaOH) for production and wastewater treatment This creates a closed-loop chemical system that replaces external chemical purchases. Proven Industrial Performance A large-scale project in Xinjiang demonstrates real industrial impact: Feed concentration: ~260 g/L Na₂SO₄ Capacity: 8.61 m³/h Annual salt conversion: >15,000 tons Annual NaOH output: ~8,500 tons Annual H₂SO₄ output: >10,000 tons The system is estimated to reduce chemical procurement costs by approximately 60 million RMB per year, while maintaining significantly lower energy consumption compared with conventional chemical supply chains. Key Advantages Ideal Applications Start Reducing Your Chemical Costs Today Upgrade your wastewater treatment system into a chemical recovery unit. Contact us to evaluate your project and receive a customized BPED solution. Turn waste into value. Improve efficiency. Build a sustainable production system.
Electrodialysis Technology for High-Purity Phosphorylcholine Desalination
A recent industrial desalination project using electrodialysis technology has demonstrated stable and efficient purification performance for phosphorylcholine-related products. The system integrates an AIO416-500S alloy membrane electrodialysis unit together with a 416-type heterogeneous membrane system, allowing flexible operation under different production capacities. During operation, feed solution conductivity was successfully reduced from approximately 50 mS/cm to below 60 μS/cm, achieving a desalination rate exceeding 99% while maintaining low product loss. Importantly, the electrodialysis process had minimal impact on product pH, helping preserve material stability throughout purification. Compared with conventional desalination methods, electrodialysis offers several advantages for fine chemical and pharmaceutical intermediate applications: ✔ Low wastewater discharge ✔ Low operating pressure ✔ Compact footprint ✔ Lower energy consumption ✔ Stable continuous operation The project has now entered stable production operation, with treatment performance fully meeting customer expectations. As industries continue seeking cleaner and more resource-efficient purification technologies, electrodialysis is becoming an increasingly valuable solution for high-value product desalination and process optimization.
How to Increase Lithium Extraction Capacity Without Building a New Production Line?
For many aging lithium extraction plants, the biggest challenge is no longer raw material supply — it’s production bottlenecks caused by outdated membrane performance and early-stage system design limitations. A leading salt lake lithium producer in China recently faced this exact issue. After more than 7 years of operation, its lithium concentration production line had reached the processing limit of the original electrodialysis system. The conventional solution would have required: Instead, the company chose to optimize its existing lithium extraction system. LANRAN implemented a targeted electrodialysis retrofit solution by upgrading the core ion exchange membranes and key stack components. The project introduced next-generation high-selectivity membranes with improved ion transport efficiency, combined with optimized process engineering developed through 17 years of industrial electrodialysis experience. The retrofit was completed in just two weeks — without changing the existing equipment footprint or power configuration. Results after the upgrade:✔ 10% increase in production capacity✔ Lithium concentration increased to over 21 g/L✔ Improved mass transfer efficiency✔ Faster ROI with minimal capital investment For lithium brine processing and salt lake lithium extraction projects, upgrading membrane systems can often deliver significant capacity expansion without building new facilities. At LANRAN Technology, we help industrial clients optimize electrodialysis systems, improve lithium recovery efficiency, and unlock additional value from existing production assets through advanced ion exchange membrane technology and engineering upgrades.