Precision-engineered components directly exported from our state-of-the-art Chinese manufacturing facilities to global industrial partners.
Established in 2005, Wenzhou Stpete Electronics Technology Co., Ltd. has grown into an industry-leading high-tech enterprise. We specialize in the R&D, manufacturing, and export of high-end electronic connectors, custom board-level shieldings, and specialized component solutions.
Guided by rigid international frameworks, we hold active certifications for ISO 9001, ISO 14001, and ISO 45001. Backed by 21+ design and utility patents, our customized EMI shielding structures protect delicate circuits in the most demanding conditions.
We work collaboratively with global tech giants and national leaders including Huawei and Hisense. Our shielding covers meet rigorous automotive, medical, and aerospace-level frequency attenuation specifications.
A technical guide on EMI/RFI suppression, localized compliance, and global supply chain strategy for modern hardware engineers.
As microprocessors speed up and wireless communications integrate more frequencies (e.g., 5G, Wi-Fi 6E/7, and Bluetooth Low Energy), board-level electromagnetic compatibility (EMC) is now a primary engineering bottleneck. A board-level shielding (BLS) cover, also known as an EMI shielding can, is the first and most cost-effective line of defense. By isolating critical processing units, RF modules, and amplifiers directly on the PCB, engineers can prevent both internal cross-talk and external radiated emissions.
Historically, generic shielding components could satisfy basic shielding requirements. However, today's compact designs, such as ADAS radar boards, IoT transceivers, and high-density telecom motherboards, require custom-engineered shielding covers. These custom enclosures must optimize thickness, material choice, thermal management vents, and SMT coplanarity to ensure both electrical attenuation and assembly yield.
Choosing the correct alloy is fundamental to structural stability and electrical performance. At Wenzhou Stpete Electronics, our materials group processes several key alloys depending on the custom OEM specification:
One of the primary failure modes in high-volume SMT (Surface Mount Technology) assembly is open joints or solder bridges beneath the shielding frame. If the bottom edge of the shielding cover is not perfectly flat, a gap will form during the reflow process, resulting in shielding failure or mechanical weakness.
Stpete implements rigorous coplanarity control of less than 0.08mm - 0.10mm across the entire perimeter of our custom shielding cans. Using high-speed progressive die stamping machines and CNC precision punch presses, we maintain uniform tension across the drawn corners. Every batch is validated through optical automated inspection (AOI) and 3D laser scanners before packaging in carrier tape (tape-and-reel) to allow automated pick-and-place assembly.
Why Tier-1 hardware brands source their custom EMI components from integrated Chinese manufacturing hubs.
Sourcing OEM custom shielding covers from Wenzhou, China, offers a significant speed-to-market advantage. Our localized manufacturing ecosystem allows us to compress tooling design, raw material procurement, and progressive die fabrication into a fraction of the time required by Western toolmakers. Stpete provides a full service cycle: from initial DFM (Design for Manufacturing) review and FEA simulation, through custom prototype stamping (using soft tooling), to high-volume progressive die runs.
Our facility integrates tool design, stamping, insert molding, and automated packaging under one roof. This minimizes transportation delays and removes the communication overhead common with multi-tier subcontractors.
Global logistics demand strict compliance with international trade and safety laws. Our technical support teams work closely with procurement managers globally to ensure seamless integration:
Custom EMI shielding covers are critical across several key industries:
1. Automotive Electronics (ADAS & Infotainment): Modern electric vehicles utilize complex sensor arrays, LiDAR, and radar modules that generate significant high-frequency noise. Our automotive-grade shielding covers are designed to withstand constant vibration and thermal shock cycles without cracking or delaminating from the PCB.
2. 5G Base Stations & High-Speed Telecom: Outdoor telecommunication systems face extreme weather and high RF power density. We design heavy-duty, multi-cavity shielding enclosures with integrated heat dissipation holes, allowing thermal transfer while maintaining target attenuation levels up to 40 GHz.
3. Smart Medical Devices: Implantable sensors and patient monitors require absolute EMI isolation to prevent life-threatening reading errors. Stpete produces ultra-clean, micro-stamped shielding cans under dust-controlled production zones to meet medical cleanliness guidelines.
Addressing critical design, material, and logistics queries for international hardware procurement teams.
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Stpete Electronics