Direct supply line for high-performance interconnects, switch modules, and high-conductivity die-cast assemblies.
Established in 2005, Wenzhou Stpete Electronics Technology Co., Ltd. has positioned itself as an industry-leading, high-tech enterprise dedicated to the design, engineering, prototyping, and large-scale manufacturing of high-reliability electronic connectors and thermal management solutions.
With over two decades of mechanical engineering experience, we support critical operations in telecommunications, automotive electronics, network equipment, and consumer technologies. By aligning our custom fabrication capabilities with strict international standards, we serve as an essential OEM/ODM link for multinational corporations, securing high-performance parts that require high thermal limits and precise dimensional layouts.
Our core product catalog spans high-precision interface connectors, including IF Radio-Frequency Terminals, FCB Network Jacks, DC Power Outlets, USB Sockets, and AV Pin Jack Boards, alongside custom-engineered Aluminium Radiators and die-cast heat sinks. Through rigorous engineering practices, we provide structural designs that stand up to complex thermal cycles and high-vibration applications.
Uncompromising inspection protocols, certified materials, and precision machining for high-accuracy thermal components.
We operate multi-axis CNC machining complexes, automated stamping and punching stations, and precision metal slitting lines. This tooling setup allows us to fabricate complex aluminium profiles down to ±0.02mm tolerance limits, maintaining perfect flatness for optimal thermal contact.
Our management systems comply with ISO 9001:2015 (Quality Management), ISO 14001:2015 (Environmental Management), and ISO 45001 (Occupational Health & Safety). We enforce continuous quality checks throughout production, reducing waste and preventing defect outbreaks.
With an annual R&D investment exceeding 15 million RMB, our engineering department works with leading global technology brands like Huawei and Hisense to design high-power connectors and modular cooling setups.
To ensure zero-defect distribution, our QA workflow covers incoming material inspection (spectroscopic analysis to verify alloy grades), in-process inspections (dimensional checks during extrusion and CNC drilling), and final surface finish testing.
Our in-house metrology lab is equipped with coordinate measuring machines (CMM), profile projectors, digital hardness testers, and salt-spray testing chambers. This enables our team to guarantee that our anodized layers withstand harsh environmental conditions without cracking, peeling, or deteriorating in heat conductivity.
Crucial thermal metrics, mechanical parameters, and structural trade-offs for industrial and commercial applications.
Procurement teams face critical challenges when choosing an OEM partner for high-power aluminium cooling solutions. Thermal performance is not merely a product of surface area; it requires the optimization of base thickness, fin geometry, air velocity matching, and pressure drop budgets. Under-designed heat sinks lead to thermal runaway, while over-engineered solutions add unnecessary weight and cost.
Choosing the correct grade of aluminium is key to balancing mechanical strength with thermal performance:
| Property | Aluminium Alloy 6063-T6 | Aluminium Alloy 6061-T6 | Die-Cast Alloy (ADC12) |
|---|---|---|---|
| Thermal Conductivity (W/m·K) | 200 - 215 | 166 - 180 | 96 - 120 |
| Tensile Strength (MPa) | ≥ 230 | ≥ 290 | ≥ 250 |
| Extrudability / Formability | Excellent | Moderate | Complex geometry via cast |
| Primary Application | High-density fin extrusions, CPU heat sinks | Structural liquid cold plates, heavy machinery | Complex 3D housings, automotive housings |
To protect radiators against atmospheric corrosion and maximize radiative heat dissipation, we offer several custom surface treatment options:
Clear and Color Anodizing: Forms a thin, protective aluminium oxide layer that increases surface hardness, provides electrical isolation, and boosts surface emissivity to maximize thermal radiation.
Electroless Nickel Plating: Ideal for copper-to-aluminium joints, this process provides low contact resistance, excellent corrosion protection, and allows for direct solderability to electronic board components.
Powder Coating & Chromate Conversion: Cost-effective corrosion barrier treatments commonly used in automotive chassis compartments and telecom outdoor enclosures.
How digital process control and regional manufacturing networks enable rapid lead times and cost advantages.
Operating out of Wenzhou, China's hardware and electrical hub, Stpete Electronics utilizes local supply chains to secure raw materials and process treatments at competitive costs. Our facility integrates raw material sourcing, automated tooling design, precision CNC machining, surface anodizing, and multi-pin terminal insert molding under a single managed flow.
By consolidating these processes in-house, we eliminate intermediate transport delays and reduce quality risks associated with third-party logistics.
Through automated production tracking, our manufacturing execution system (MES) provides real-time visibility from initial raw material entry to final dispatch. This digital infrastructure allows us to easily scale production to meet sudden demand spikes, while maintaining consistent production schedules.
Our engineering team helps clients optimize their designs for manufacturing (DFM). By evaluating draft angles, wall thicknesses, and fin profiles before extrusion dies are cut, we help reduce prototyping costs by up to 35% and speed up production schedules. Whether you require standard pin-fin arrays or custom multi-sided cooling profiles, our tooling setup ensures high precision and rapid production start.
Pioneering advancements in electronic packaging, heat pipes, and custom thermal management architectures.
As microprocessors push beyond traditional cooling limits, Stpete is combining high-thermal-conductivity copper vapor chambers with lightweight extruded aluminium fin arrays. This hybrid approach allows for rapid heat spreading at the source, while using lightweight aluminium fins for heat dissipation.
For applications where forced air cooling is insufficient, we are developing thin-walled, multi-channel liquid-cooled cold plates. By utilizing friction stir welding (FSW) to seal machined pathways, we deliver robust, leak-free liquid cooling solutions for EV electronics and industrial energy modules.
Stpete is committed to supporting carbon neutrality initiatives. We are increasing our use of low-carbon, recycled aluminium alloys, helping clients reduce their scope 3 emissions without sacrificing mechanical strength or thermal performance.
Adapting our radiator designs to meet the regulatory and environmental requirements of key global industries.
Outdoor radio-frequency transmitters and base stations require robust weatherproofing and continuous operation. Stpete designs heavy-duty, corrosion-resistant radiators that withstand salt spray and harsh outdoor environments, maintaining thermal stability under continuous heat loads.
Modern EV powertrains and power inverters rely on rapid thermal dissipation to protect sensitive silicon and GaN components. Our cold plates and custom radiators help maintain component temperatures within narrow design limits to prevent performance degradation.
High-voltage motor controllers and variable frequency drives generate significant localized heat. Our high-aspect-ratio, multi-fin extruded heat sinks provide effective cooling under natural or forced convection, ensuring reliable system operation.
Ensuring compliance with international standards through material traceability and environmental responsibility.
Exporting custom industrial components requires strict compliance with international trade standards. At Stpete, we ensure that every custom radiator batch meets the necessary regulatory requirements for target markets:
A unified team focused on collaboration, professional growth, and engineering excellence.
In Wenzhou Stpete Electronics, we believe that technological innovation is driven by collaborative teamwork. To strengthen cohesion and foster collaboration across departments, our company regularly organizes team-building initiatives, bringing together R&D engineers, manufacturing leads, and quality control experts.
These events are designed to promote unity and cooperation among employees. Through challenging, interactive exercises, our team members have the opportunity to collaborate, communicate, and solve problems together in a supportive environment.
These team-building activities help build trust and coordination, encouraging staff to work closely together to achieve common goals. This cooperative spirit carries over to our factory floor, improving manufacturing efficiency and ensuring a reliable supply chain for our global customers.
Explore our wider range of certified connector switches, jack sockets, and custom mechanical sub-assemblies.
Technical guidance and sourcing details for global procurement teams and engineers.
We primary use Aluminium Alloys 6063 and 6061 for our custom heat sink and radiator designs. For high-density fin extrusions where maximum thermal conductivity is required, 6063-T6 is our standard choice. For structural components, liquid-cooled plates, and components requiring complex CNC milling, we utilize 6061-T6 due to its higher tensile strength.
Using our CNC machining centers and high-speed stamping systems, we achieve dimensional tolerances as tight as ±0.02 mm, depending on the component's geometry and material grade. We also monitor surface flatness down to ≤0.1 mm over 100 mm to ensure low contact thermal resistance at the interface with the semiconductor package.
Yes, our manufacturing processes are ISO 9001 and ISO 14001 certified. Our products, including our RF terminals, Network Jacks, and custom Radiators, meet RoHS and REACH environmental standards. This compliance ensures safe integration into consumer electronics, industrial systems, and automotive components destined for European and North American markets.
Yes, we provide Design for Manufacturing (DFM) support. Our R&D team reviews your 3D CAD files to optimize fin ratios, draft angles, and hole placement. This proactive approach helps reduce initial tooling costs and shortens lead times for mass production.
We offer anodizing (clear and color), electroless nickel plating, and chromate conversion coatings. These treatments form protective surface layers that protect raw aluminium from oxidation, salt-spray damage, and electrochemical corrosion in demanding environments.
Stpete Electronics
