Explore our industrial cooling range, manufactured under IATF 16949 standards for global automotive deployment.
The paradigm shift from traditional combustion engines to electric powertrains requires high-density thermal integration.
Unlike internal combustion engine (ICE) vehicles that utilize waste heat for cabin warming, electric vehicles (EVs) require high-efficiency thermal architectures to manage energy intelligently. Modern EV thermal management systems (EV-TMS) unify battery thermal management systems (BTMS), power electronics cooling loops, and cabin heating, ventilation, and air conditioning (HVAC) into integrated, multi-valve, thermal-pump circuits.
Maintaining the lithium-ion battery packs within the optimal temperature threshold (15°C to 35°C) is critical. Operating above this range accelerates cell degradation and increases safety risks, while dropping below it severely degrades capacity and retards fast-charging capabilities. As the market transitions toward 800V fast-charging architectures, high-performance liquid cooling plates and micro-channel flat tubes are becoming the global standard for heat dissipation.
Established in 2007, Zhejiang Rock Auto Co., Ltd. has developed into a premier manufacturer, exporter, and supplier of high-performance automotive cooling system components. With over 15 years of industry experience, we have earned a global reputation as a pioneer in the design and manufacturing of aluminum-based cooling products.
We are certified to ISO/TS 16949, and our state-of-the-art manufacturing facility features advanced technologies, including high-vacuum brazing furnaces, dedicated fin-forming machines, and automated core assembly systems. Our team is proficient in all aspects of thermal engineering, from design validation to final pressure-cycle testing, ensuring that every product complies with strict global OEM standards.
Our solutions serve a broad array of applications, spanning passenger automobiles, heavy industrial machinery, shipbuilding, power generation, and specialized mold operations.
How Zhejiang Rock Auto delivers premium, cost-effective thermal systems globally.
Located in Zhejiang, we leverage a highly localized, integrated supply chain for precision-alloyed aluminum. This guarantees raw material purity and provides direct access to customized clad layers, improving brazing joints and corrosion resistance.
By employing continuous nitrogen atmosphere brazing (CAB) lines, high-frequency tube welding mills, and automated fin inserting machinery, we achieve micron-level tolerances and repeat stability across multi-million piece batches.
Every product line undergoes structural integrity tests including burst pressure testing, helium leak detection, salt spray corrosion testing, and thermal shock cycles to guarantee durability under extreme vehicle operating conditions.
Customizing cooling architectures for distinct environments and vehicle profiles.
For vehicles operating in Nordic climates or northern regions, our intercooler and heater systems work with PTC heaters and integrated heat pumps. Our systems maximize cabin comfort and keep battery packs in warm states to prevent capacity fade and charging restrictions.
In hot desert regions like the Middle East, battery liquid-cooling plates must handle high heat reject demands. Our micro-channel aluminum tubes provide high thermal contact coefficients, enabling high heat transfer and preventing thermal runaway under heavy discharge loads.
Heavy-duty trucks require cooling architectures that can withstand intense vibration and duty cycles. We build high-durability oil coolers and robust fin structures designed for construction machinery, industrial operations, and marine environments.
Aligning with tomorrow's automotive engineering standards.
The industry is transitioning from distributed cooling loops toward integrated modules that route coolant dynamically via multi-way valves. This reduces assembly complexity and saves space in the engine bay.
Ultra-thin aluminum cold plates with internal structural paths are replacing traditional cooling tubes. This configuration allows direct thermal contact with battery cells, minimizing temperature gradients across the pack.
To reduce global warming impact, manufacturers are shifting to eco-friendly refrigerants like CO2 (R744). This transition requires high-pressure gas coolers and customized aluminum heat exchangers capable of operating at elevated pressures.
Ensuring compliance, reliability, and long-term partnership with global OEMs.
Global procurement teams prioritize vendors who can guarantee long-term performance and robust logistics. Zhejiang Rock Auto structures its engineering operations around:
Innovation: We continuously advance and refine our product offerings to keep pace with changing market demands.
Integrity: We maintain transparency, ethical sourcing, and open communication with all of our global clients.
Sustainability: We design products that reduce environmental impact through material recycling and efficient production processes.
Customer Satisfaction: We offer tailored product options and comprehensive engineering support to meet our customers' exact specifications.
Answers to common questions from procurement managers and thermal engineers.
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