Founded in 1997, Bolian is a global leader in filtration and diaphragm materials, integrating R&D, manufacturing, sales, and service. With nearly 30 years of dedication to separation technology, Bolian continuously innovates and delivers high-quality filtration products that meet the demands of various industries. Leveraging deep technical expertise and rich industry experience, Bolian’s products are successfully applied in mining, metallurgy, chemical, food, environmental protection, non-metallic minerals, and non-ferrous metal sectors, helping global users achieve optimal economic efficiency.
With over 20 years of production and R&D experience, Bolian is one of the largest manufacturers of electrolytic diaphragm products in the world. As a trusted supplier to three of the world’s largest nickel producers, Bolian holds a leading position in the industry. Supported by patented technologies, our products deliver outstanding advantages in precise water permeability, liquid retention, low energy consumption, and durability. Bolian owns one invention patent and two utility model patents, and actively participates in drafting industry standards for electrolytic diaphragm products, promoting sustainable and standardized development of the field.
Wide variety — general type, low-permeability type, high-permeability type, low-resistance type, and corrosion-resistant type.
Stable water permeability and liquid level difference; service life of 6 months or longer.
Strict compliance with ISO 9001 Quality Management System, following European testing standards from raw materials to finished products.
Maintains necessary liquid level difference while minimizing resistivity, reducing energy consumption and electricity costs.
Customizable options for precise process matching and optimal cost performance.
Suitable for electrolysis and electrowinning refining processes of non-ferrous metals, including sulfide and chloride systems.
Electrolytic water hydrogen production offers advantages such as simple operation and high hydrogen purity. It integrates effectively with renewable energy, significantly reducing hydrogen production costs. As the lowest carbon-emission hydrogen production method, water electrolysis is currently the only scalable way to produce green hydrogen.
Independently developed products compatible with ALK alkaline electrolyzers.
Made from high-performance PPS (polyphenylene sulfide) composite material, with a maximum width of 3.6 meters.
High strength, excellent heat resistance, and low surface resistance. The optimized pore structure and hydrophilicity enable efficient separation of hydrogen and oxygen gases, preventing mixing and ensuring safety while improving hydrogen production efficiency.
Applicable to alkaline water electrolysis hydrogen production processes.