Established in 2007, Zhejiang Rock Auto Co., Ltd. has spent nearly two decades defining the standards of the automotive cooling industry. As an ISO/TS 16949 certified manufacturer, our expertise extends beyond simple production. We provide integrated engineering solutions that address the complex thermodynamics of modern Internal Combustion Engines (ICE) and the emerging demands of Electric Vehicle (EV) thermal management.
Our 15-year trajectory is marked by a relentless pursuit of Information Gain—we don't just replicate components; we optimize them. By utilizing high-frequency welding for aluminum tubes and advanced fin geometry, we increase the heat transfer coefficient while reducing the overall weight of the cooling module. This is critical for fuel efficiency in traditional trucks and range extension in electric vans.
Transitioning from traditional 3003 series alloys to high-strength 4045 cladding materials for better corrosion resistance and brazing quality. Our focus is on thin-wall technology to reduce thermal resistance.
As the industry shifts to EVs, we are innovating in Battery Cooling Plates and Chillers. Heat management is no longer just about the engine; it's about battery longevity and safety.
Integrating AI-driven quality checks in our Brazing Furnaces and Core Assembly units to ensure zero-defect output for Tier-1 automotive suppliers worldwide.
Why choose a China-based factory like Zhejiang Rock Auto? It comes down to Vertical Integration. From raw aluminum extrusion and high-frequency welding to final radiator assembly and pressure testing, our entire workflow is centralized.
Supply Chain Advantages:
Our components are engineered for versatility, serving a wide array of industrial sectors with localized technical support for markets in Europe, North America, and Southeast Asia.
Heavy-duty radiators and oil coolers designed for high-vibration environments and long-haul durability.
Corrosion-resistant copper and aluminum heat exchangers for marine engines and navigation systems.
Efficient energy-saving condensers and finned tubes for commercial refrigeration and air conditioning.
Robust cooling solutions for tractors, excavators, and sugar processing machinery.
Specialized cooling plates for 40kwh-100ah battery packs used in electric delivery vans.
Precision temperature control components for high-speed manufacturing lines.
At Zhejiang Rock Auto, our mission is to deliver high-quality and cost-effective cooling solutions that not only meet but exceed customer expectations. This involves a deep dive into User Intent Mining. We understand that an engineer isn't just looking for a "tube"—they are looking for a component that minimizes pressure drop, maximizes surface area, and fits within a constrained engine bay. Our R&D unit conducts detailed research and surveys to improve the performance and durability of our products, ensuring we remain at the forefront of the industry.
We are proud to be ISO/TS 16949 certified. Our state-of-the-art facility is equipped with:
Aluminum is the industry standard due to its excellent strength-to-weight ratio and thermal conductivity. For highly corrosive environments, we offer specialized cladding and protective coatings.
Yes. Our "Custom Size of Aluminum Tube" service allows for specific widths, heights, and wall thicknesses (ranging from 0.25mm to 1.5mm) to fit any heat exchanger design.
We perform 100% helium leak testing and pressure cycle testing to ensure that the cooling plates can withstand the thermal expansion and contraction cycles of EV batteries.
We provide full technical documentation in English, compliance certificates (RoHS, REACH), and have a dedicated export team to handle logistics and customs for over 50 countries.
Typically, standard components are shipped within 15-20 days, while custom-engineered solutions take 30-45 days depending on the complexity of the tooling.
Rock Auto
