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Chongqing Puretech – 20+ years of innovation in transformer oil filtration, turbine oil purification, lubricating oil treatment, vacuum systems, and SF6 gas recovery. Trusted by power plants, refineries, and industrial facilities worldwide.
Chongqing Puretech Electrical and Mechanical Equipment Co., Ltd. has been a pioneer in oil purification technology for over two decades. As a leading manufacturer, we specialize in R&D, production, and global distribution of high-performance oil treatment systems.
Our mission is to deliver reliable, efficient, and cost-effective solutions that enhance equipment longevity, reduce downtime, and ensure operational safety across power generation, petrochemical, manufacturing, and energy sectors.
Years Experience
Countries Served
Comprehensive oil purification systems designed for industrial reliability, efficiency, and long-term performance. All machines are engineered to meet international standards and customized to client needs.
Advanced two-stage vacuum system for maximum dehydration, degassing, and filtration of transformer oil. Ideal for power substations and high-voltage equipment maintenance.
Compact, mobile solution for on-site oil regeneration and purification. Designed for ease of transport and rapid deployment in remote locations.
Removes water, gases, and particulates from industrial lubricants. Extends oil life and protects critical machinery in steel mills, cement plants, and compressors.
Fully mobile unit with trailer chassis for field service. Perfect for utility companies managing multiple transformer sites.
Supplies clean, dry air for transformer preservation and maintenance. Prevents moisture ingress during outages and repairs.
Complete solution for SF6 gas handling in switchgear. Recovers, purifies, stores, and refills gas with minimal emissions.
High-capacity vacuum units for transformer evacuation, drying, and oil filling. Ensures complete moisture removal before energizing.
Compact, wheeled unit for offline filtration of hydraulic systems. Removes particles and water without shutting down equipment.
We combine cutting-edge engineering with decades of field experience to deliver oil treatment solutions that perform under the most demanding conditions.
ISO-certified manufacturing with rigorous testing. 2-year warranty on all equipment.
Double-stage vacuum and coalescing technology ensure maximum contaminant removal.
Tailored solutions, responsive support, and lifetime technical assistance.
Exported to 50+ countries with local partners and service networks.
Years in Industry
Countries Served
Machines Installed
Customer Satisfaction
Everything you need to know about our oil purification systems.
Double-stage systems have two vacuum chambers, allowing deeper vacuum levels and more efficient removal of moisture and gases. They are ideal for severely degraded oil or high-voltage transformers.
Yes, we offer OLTC (On-Load Tap Changer) online oil filter units that allow continuous filtration without shutting down the transformer.
Absolutely. We design skid-mounted, trailer-mounted, explosion-proof, and PLC-controlled systems based on client specifications and site conditions.
We provide installation guidance, operator training, remote troubleshooting, spare parts supply, and lifetime technical consultation.
Standard filtration is 5–10μm. For sensitive equipment, we recommend 1–3μm. Our engineers can help select the optimal filter rating based on your oil analysis.
Ready to improve your oil quality and equipment reliability? Contact PureTech today for a free consultation and quote.
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