Zhejiang Rock Auto Co., Ltd. — Your trusted manufacturer, exporter & supplier of high-performance radiators, intercoolers, oil coolers & aluminum cooling tubes for global markets.
A pioneering force in aluminum-based auto cooling technology since 2007, trusted by global OEM and aftermarket clients.
Zhejiang Rock Auto Co., Ltd. has been a leading manufacturer, exporter, and supplier of high-performance auto cooling system components. We specialize in producing a wide range of automotive cooling solutions, including radiator tubes, intercooler tubes, oil cooler tubes, as well as radiators, intercoolers, and oil coolers.
With more than 15 years of industry experience, Zhejiang Rock Auto has earned a reputation as a pioneer in the design and manufacturing of aluminum-based cooling products. We are committed to providing high-quality, cost-effective, and innovative solutions that meet the rigorous demands of our global customers.
Our products are widely used in automobile, heavy industry, shipbuilding, sugar processing, packaging, navigation, molds, and other specialized applications.
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To deliver high-quality and cost-effective cooling solutions that not only meet but exceed customer expectations, while fostering a culture of innovation and sustainability. Every product we manufacture is a testament to our commitment to engineering excellence and global reliability.
To be a global leader in the auto parts industry, recognized for our advanced technologies, outstanding customer service, and environmental stewardship. We aspire to set new benchmarks in thermal management engineering across multiple industries worldwide.
Four core values underpin every decision, every product, and every partnership at Zhejiang Rock Auto.
Constantly advancing and improving our product offerings through dedicated R&D and cutting-edge manufacturing technologies.
Maintaining the highest standards of business ethics and transparency in every transaction and partnership we undertake globally.
Minimizing environmental impact through responsible manufacturing practices and eco-conscious material selection in all our processes.
Ensuring that our products and services consistently meet customer needs — from initial inquiry through after-sales support.
From precision-engineered tubes to complete cooling assemblies — we manufacture the full spectrum of thermal management components.
Precision-formed aluminum radiator tubes engineered for maximum thermal conductivity and durability in demanding automotive environments. Available in multiple profiles and dimensions.
High-efficiency intercooler tubes and complete intercooler units designed to significantly reduce intake air temperature in turbocharged and supercharged engines.
Robust oil cooler tubes and complete oil cooling systems engineered to maintain optimal oil temperatures in automotive, heavy machinery, and marine applications.
Our ISO/TS 16949 certified facility is equipped with the latest manufacturing technologies, ensuring every product meets the most stringent quality standards.
Advanced continuous brazing furnaces with precise temperature control ensure perfect metallurgical bonds in every aluminum cooling component we produce.
High-speed automated fin-forming machines produce consistent, precision-corrugated fins that maximize heat dissipation surface area across all product lines.
Automated core assembly systems ensure dimensional accuracy and structural integrity in every radiator, intercooler, and oil cooler core we manufacture.
Fully equipped in-house testing laboratory conducts burst pressure tests, leak tests, thermal cycle tests, and vibration tests on all finished products.
In-house tooling and die manufacturing capabilities allow us to develop custom molds and fixtures for bespoke OEM product configurations rapidly.
Dedicated research and development unit conducts detailed surveys and product trials to continuously improve performance, durability, and efficiency.
Built on 17+ years of engineering expertise, our competitive advantages deliver measurable value to every client, every order.
Deep domain expertise accumulated over 17+ years of continuous production and innovation in automotive thermal management systems.
Our ISO/TS 16949 certification guarantees automotive-grade quality management across the entire design, production, and delivery process.
Custom design, tooling, and production for OEM clients. From concept drawings to mass production, we handle the complete development cycle.
Products exported to 80+ countries across North America, Europe, Southeast Asia, Middle East, and Africa with reliable logistics support.
A comprehensive comparison of what sets us apart from ordinary suppliers — experience the difference that 17 years of excellence makes.
| Feature / Capability | Zhejiang Rock Auto | Typical Supplier | Your Benefit |
|---|---|---|---|
| 🏆 Quality Certification | ✔ ISO/TS 16949 Certified | Basic ISO 9001 only | Automotive-grade quality assurance on every unit |
| 🔬 R&D Capability | ✔ Dedicated R&D Center | No in-house R&D | Custom solutions tailored to your specifications |
| 🏭 Production Technology | ✔ Brazing Furnaces + Fin Machines | Manual / semi-automated | Consistent quality & high-volume capacity |
| 🌍 Export Experience | ✔ 80+ Countries, 17+ Years | Limited regional export | Smooth international logistics & documentation |
| ⚙️ OEM Services | ✔ Full OEM / ODM Support | Standard catalog only | Branded products built to your exact requirements |
| 🧪 Material Quality | ✔ Premium Aluminum Alloys | Mixed grade materials | Superior corrosion resistance & longevity |
| 📦 Lead Time | ✔ 15–25 Days Standard | 45–90 Days typical | Faster time-to-market for your business |
Our certifications are your assurance of consistent quality, safety, and regulatory compliance across every product category.
Automotive Quality Management System certification — the gold standard for auto parts manufacturers worldwide, ensuring rigorous process control.
All aluminum alloys and raw materials undergo third-party chemical composition and mechanical property testing before entering production.
100% of finished cooling products are subjected to burst pressure and helium leak detection tests to guarantee zero-defect delivery.
Accelerated thermal cycling and vibration endurance tests simulate 10+ years of real-world operating conditions to validate product longevity.
Our R&D unit is the cornerstone of our business — conducting detailed research and surveys to continuously improve performance, durability, and efficiency.
Our R&D team conducts detailed research and surveys to improve the performance and durability of our products. Computational fluid dynamics (CFD) simulations are used to optimize heat exchanger designs before physical prototyping.
Commitment to innovation allows us to design new products with superior functionality, tailored to the specific needs of our clients. Our development cycle from concept to production-ready prototype averages just 30–45 days.
We actively explore new applications for our cooling solutions — expanding beyond automotive into shipbuilding, sugar processing, packaging machinery, and navigation systems to stay at the forefront of the industry.
From custom design to branded packaging — we are your complete one-stop OEM/ODM manufacturing solution for auto cooling components.
At Zhejiang Rock Auto, we offer comprehensive OEM and ODM services that allow you to bring your product vision to life. Whether you need a custom-dimensioned radiator tube, a specially configured intercooler, or a fully branded cooling system assembly, our engineering team will work closely with you to deliver exactly what you need.
Our in-house tooling capabilities mean shorter lead times and lower NRE (Non-Recurring Engineering) costs compared to outsourced tooling. We support small batch trials and scale seamlessly to high-volume mass production.
Submit your drawings, specs, or sample — our engineers analyze and provide feasibility feedback within 24 hours.
Custom tooling and die fabrication completed in-house, typically within 7–14 days for standard configurations.
Physical prototypes tested to your specifications. Full test reports and samples dispatched for your approval.
Upon approval, we commence mass production with full QC documentation and on-time delivery commitment.
Our cooling solutions power critical applications across a diverse range of industries, from passenger cars to heavy industrial machinery.
| Industry | Application | Products Used | Key Requirement |
|---|---|---|---|
| 🚗Automobile | Engine cooling, transmission cooling, charge air cooling | Radiators, Intercoolers, Oil Coolers, Tubes | High thermal efficiency, lightweight |
| 🏗️Heavy Industry | Construction machinery, mining equipment, industrial engines | Heavy-duty Radiators, Oil Coolers | Extreme durability, high pressure tolerance |
| 🚢Shipbuilding | Marine engine cooling, hydraulic system cooling | Marine-grade Coolers, Corrosion-resistant Tubes | Saltwater corrosion resistance |
| 🍬Sugar Processing | Process heat exchangers, hydraulic cooling | Custom Heat Exchangers, Oil Coolers | Food-grade material compliance |
| 📦Packaging | Hydraulic system cooling for packaging machinery | Compact Oil Coolers, Intercooler Tubes | Compact dimensions, reliable performance |
| 🧭Navigation | GPS/navigation equipment thermal management | Miniature Heat Exchangers, Cooling Tubes | Precision dimensions, vibration resistance |
| 🔩Molds & Tooling | Mold temperature control, injection molding cooling | Custom Cooling Channels, Tube Assemblies | Dimensional precision, pressure integrity |
From custom OEM programs to large-volume export orders — here are representative projects that demonstrate our engineering capability and reliability.
Custom aluminum radiator development for mid-size sedan platform
High-pressure oil coolers for construction equipment manufacturer
Saltwater-resistant intercooler assemblies for marine engine builder
Real feedback from real partners — trusted by distributors, OEM manufacturers, and aftermarket suppliers across 80+ countries.
"We have been sourcing aluminum radiator tubes from Zhejiang Rock Auto for over 5 years. The quality consistency is outstanding — every batch passes our incoming inspection without issue. Their ISO/TS 16949 certification is not just a piece of paper; it shows in every product."
"The OEM service from Rock Auto is exceptional. They developed a completely custom intercooler for our turbocharged engine platform in just 3 weeks — from drawings to approved prototype. The tooling quality and dimensional accuracy were perfect."
"Excellent supplier for marine cooling components. Their salt-spray tested intercoolers have performed flawlessly in our harsh marine environments. Delivery is always on time and the export documentation is always complete and accurate."
Contact Zhejiang Rock Auto today to discuss your requirements. Whether you need standard catalog products, custom OEM solutions, or a long-term supply partnership — we are ready to deliver.
Diagnosing a leaking aluminum car radiator can be crucial for maintaining your vehicle's performance. A radiator leak not only affects cooling
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