Chongqing Three-Ring Oil Filter Manufacturing Co., Ltd., also known as Chongqing Sanhuan Oil Purifier Manufacture Co., Ltd., is a manufacturer based in Chongqing, China, established in 1991. With 11 to 50 employees, the company specializes in the development, manufacturing, and sale of oil treatment purification regenerative equipment, water treatment treating plants, and air mist and dust treating plants. They are recognized as a high-technology and new-technology business, focusing on solid and fluid isolation techniques. The company offers contract manufacturing services and has a factory for production. Their extensive product range includes 17 series with over 160 varieties, such as multi-functional oil purification and regeneration machines, insulating oil regenerators, lubricating oil purifiers, turbine oil purifiers, phosphate fire-resistant oil purifiers, vacuum oil purifiers, and automatic water filters. These products are widely applied in various industries including electric power, metallurgy, petroleum, chemical, mining, machinery, shipping, railroad, and aviation. Chongqing Three-Ring Oil Filter Manufacturing Co., Ltd. holds ISO 9001 certification and is recognized as a National Self-management Import and Export Enterprise, exporting its products to domestic and international markets.
OEM manufacturerOffers OEM services for customized brand manufacturing.
Patented technologyHolds multiple product or process patents.
High-tech enterpriseRecognized as a high-tech or innovative enterprise.
Established brandFounded in 1991, with over 20 years of industry experience.
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Products
Products
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Categories
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RYJ Oil Purifier Series Solely Designed For Lubricating Oil
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DYJ Multi-Functional Oil Purification & Regeneration Machine Series
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GYJ Multi-Functional Regenerator Series For Insulating Oil
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Three-Ring Card SZJ Twin-Stage Vacuum Oil Purifier Series
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Three-Ring Card ZYJ Vacuum Oil Purifier Series
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Three-Ring Card ZLQ Automatic Water Filter Series
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Three-Ring Card YKQ Series Transformer Ltc Oil Purifier
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QYJ Purifier Series for Turbine Oil
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Certifications
ISO 9001
1
International Organization for Standardization 9001
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Description
Chongqing Sinoring Co. Ltd., established in 2003, is a manufacturer based in Chongqing, China, specializing in the design and production of various oil purifier equipment. With a workforce of 11 to 50 employees, the company operates a state-of-the-art factory equipped with advanced machinery and technology. They offer OEM, ODM, and contract manufacturing services for a wide range of oil purification solutions, including transformer oil filtration machines, turbine oil purifiers, engine oil purifiers, lube oil purifiers, gear oil purifiers, and fuel/diesel oil purifiers. Their product portfolio also includes disc stack centrifuge separators and vacuum transformer oil filtration systems. Chongqing Sinoring Co. Ltd. emphasizes continuous improvement through research and development and maintains a comprehensive supply chain network to ensure efficient delivery to clients globally. They are committed to providing customized solutions and exceptional after-sales support.
Chongqing Tongrui Filtration Equipment Manufacturing Co., Ltd. is a professional manufacturer and trading company established in 2007, specializing in the research and production of advanced oil purification and recycling equipment. Based in Chongqing, China, the company operates a dedicated factory and maintains a robust R&D team that supports OEM, ODM, and contract manufacturing services. Their extensive product portfolio includes over 100 types of machines across 10 series, such as ZJA double-stage vacuum transformer oil purifiers, ZJC turbine oil regeneration systems, ZJD lubrication and hydraulic oil purifiers, and NRY engine oil recycling plants. They also specialize in large-scale waste oil distillation equipment (DIR and DDR series) for converting used oil into base oil or diesel.
With nearly two decades of industry experience, the company serves a diverse range of heavy industries, including electric power, petroleum, metallurgy, chemical processing, aviation, and shipping. Their technology focuses on energy conservation and environmental protection by providing customized solutions that reduce operational costs and ensure production safety. Chongqing Tongrui holds several international quality certifications, including ISO 9001, ISO 14001, CE, and SGS. The company has established a significant global presence, exporting its high-efficiency filtration systems to more than 30 countries across the Middle East, Southeast Asia, Africa, Europe, and South America.
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