Is your industrial lubricant dirty? Don't replace it-filter it first. - Chongqing Tongrui Filtration Equipment Manufacturing Co., Ltd.
Hydraulic oil turning black, gear oil contaminated with water, turbine oil emulsifying, compressor oil foaming...
For many factories, the immediate reaction is to "change the oil." However, 70% of "waste" oil is simply contaminated with water, gas, and particulates-and the right oil purifier can restore it to a usable state.

Chongqing Tongrui Filtration Equipment Manufacturing Co., Ltd. (TR / Tongrui)
Established in 2007, Tongrui is a long-standing manufacturer of oil purification equipment based in the Dadukou District of Chongqing. Integrating R&D, manufacturing, and export, the company operates under ISO 9001 and CE certification standards, with products exported to over 40 countries across Europe, the Americas, and Southeast Asia. 🛠 Key Lubricating Oil Filtration Models (ZJD Series, etc.)
- ZJD Vacuum Lubricating Oil Purifier: 3-in-1 dehydration, degassing, and impurity removal; suitable for hydraulic, gear, and compressor oils.
- ZJD-S High-Water-Content Oil Purifier: Specialized for high-moisture conditions.
- ZJD-R Regeneration & De-acidification Purifier: Demulsification + de-acidification + oil color restoration.
- ZJD-K Plate-and-Frame Vacuum Purifier: Plate-and-frame pre-filtration + vacuum fine filtration; highly effective for solid impurity removal.
- YL-B Portable Filtration & Refilling Unit: Mobile oil replenishment and online bypass filtration; cost-effective and versatile.

🎯 Solutions We Provide
✔ Hydraulic valve sticking & pump wear → Reduces particle contamination levels.
✔ Surface emulsification & bearing rust → Reduces moisture content to <100 ppm.
✔ Excessive turbine oil foaming & darkening → Demulsification and de-acidification in a single pass.
✔ Frequent oil changes & high hazardous waste disposal costs → Extends oil life by 2–3 times; reduces waste oil volume.
Applications: Power plants, steel mills, mining, cement, paper manufacturing, marine, and machining workshops.
🏭 Why Choose Tongrui
- 18 years of specialized experience in oil purifier manufacturing (not a trader); supports custom designs based on drawings, explosion-proof models, trailer-mounted units, and fully automated PLC systems.
- Includes operational commissioning videos; long-term supply of filter elements and consumables.
- Rapid domestic response; overseas support includes English documentation, CE certification, and shipping logistics.
📞 Contact Information
Kunlun Lee
Mobile / WeChat: +86 189 9620 4170
Manufacturer: Chongqing Tongrui Filtration Equipment Manufacturing Co., Ltd.
Address: Unit 27-1, Building 17, No. 198 Shuangcheng Road, Dadukou District, Chongqing, China.







