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Qiyiguo Technology specializes in the R&D and manufacturing of EMI shielding components and precision metal parts. As a professional manufacturer and supplier of sheet metal EMI shielding covers, we produce our entire automotive product line in strict accordance with the IATF 16949 quality management system, serving as an original stamping manufacturer with certified automotive-grade qualifications.
A sheet metal EMI shielding cover is a metal structural component used inside electronic devices. It utilizes conductive metal materials to form a closed or semi-closed shielding cavity, isolating sensitive circuits or sources of interference within the shielded space. This effectively blocks electromagnetic wave radiation and conduction, preventing electromagnetic interference (EMI) from disrupting the device's normal operation.
As electronic products evolve toward miniaturization, high-frequency operation, and higher levels of integration, the internal electromagnetic environment of devices becomes increasingly complex. EMI shielding covers are indispensable components in electromagnetic compatibility (EMC) design, serving as a core solution for ensuring products pass EMC certification and enhancing overall device reliability.
Our sheet metal EMI shielding covers are manufactured using high-quality materials—such as nickel silver, stainless steel, tinplate, and aluminum alloy—via high-speed, precision in-die stamping, ensuring tightly controlled dimensional tolerances.
Surface finishes include bright tin plating, matte tin plating, gold plating, and anti-oxidation passivation, making them suitable for automated SMT (Surface Mount Technology) soldering.
These products are primarily soldered onto PCBs to effectively block RF interference, electromagnetic noise, and signal crosstalk. They reduce overall device EMI radiation and stabilize the performance of chips, RF modules, power supplies, and main control circuits.
We support both wholesale of standard stock items and custom manufacturing based on customer drawings or samples. With our in-house mold workshop, we offer rapid mold creation and free prototyping. We can fulfill large-volume export orders across various sectors, including consumer electronics, automotive electronics, 5G communications, industrial automation, and medical equipment. For automotive-grade products, we provide full IATF 16949 compliance documentation.
Automotive shielding covers are manufactured in full compliance with IATF 16949 automotive quality control standards. Raw material spot checks, in-process controls, full dimensional inspections, and reliability testing all meet automotive component supply requirements. Products are fully traceable, pass OEM factory audits, and are suitable for long-term supply to both automotive OEM (factory-installed) and aftermarket supply chains; a complete set of official automotive-grade qualification reports is provided.
Products feature burr-free edges and high flatness, ensuring a flush fit with the PCB without warping. High SMT (Surface Mount Technology) yields make them ideal for automated mass production.
Stable conductive grounding performance with balanced high- and low-frequency electromagnetic shielding effects; effectively eliminates signal interference, crosstalk, and accidental circuit triggering.
Available in various configurations—such as one-piece, two-piece (frame and cover), multi-cavity isolation, and designs with grounding clips—and customizable to specific PCB layouts.
Resistant to high temperatures, automotive vibrations, and corrosion; oxidation-resistant, significantly extending the service life of the entire device.
Supports everything from small-batch prototyping to medium- and large-volume long-term export/OEM orders, ensuring stable lead times and consistent quality.
Standard products come with material composition and dimensional inspection reports. Automotive-grade products include supporting documentation for IATF 16949 certification, meeting the qualification audit requirements of overseas OEMs, automotive solution providers, and cross-border buyers.
Consumer Electronics (Smartphones, tablets, laptops, TWS earbuds)
Wireless Communication (Wi-Fi/Bluetooth modules, 5G base stations, optical modules)
Automotive Electronics (ECU, ADAS, in-vehicle infotainment systems)
Industrial Control (PLC, servo drives, variable frequency drives)
Medical Devices (Patient monitors, ultrasound equipment, portable diagnostic devices)
Power Management (Switching power supplies, DC-DC modules, inverters)
Depending on material thickness, structural design, and the operating frequency range, our EMI shielding covers typically offer shielding effectiveness between 40dB and 80dB. For most consumer electronics, shielding effectiveness exceeding 60dB is sufficient to meet major EMC certification standards such as FCC and CE. We will recommend the optimal solution based on your specific application requirements.
Yes, absolutely. We accept custom orders based on provided drawings or samples and can work with 3D models (CAD, STEP, IGS formats) and 2D engineering drawings. If you only have a preliminary concept, our engineering team can assist with the structural design and optimization of the shielding cover based on your PCB layout and operational needs.
Common materials we use include:
Tinplate (SPCC): Cost-effective with good shielding performance; suitable for most consumer electronics applications.
Stainless Steel (SUS304/316): Highly corrosion-resistant; suitable for demanding sectors such as automotive, medical, and industrial control.
Nickel Silver (Cu-Ni-Zn alloy): Offers excellent conductivity and elasticity; ideal for applications requiring superior solderability and contact reliability.
Prototyping typically takes 3–7 working days, depending on structural complexity and tooling requirements. Mass production lead times depend on order volume but generally range from 7 to 15 working days. Specific delivery dates will be confirmed upon order placement.
We support both reflow soldering and manual soldering. The shielding covers feature solder tabs at the base, ensuring reliable electrical connection and mechanical fixation to the PCB pads. We will recommend the most suitable soldering method based on your manufacturing process.
If you are looking for high-performance, highly reliable sheet metal EMI shielding cover solutions for your products, please feel free to contact us. Whether you need technical consultation, drawing evaluation, or a bulk quotation, our professional team is ready to provide efficient, expert service.
