Shielding Frame Factories & Exporter serving the Boston market

Precision-Engineered Board-Level EMI/RFI Shielding Solutions for Biotech, Advanced Robotics, and Defense Clusters in Massachusetts and Worldwide

Serving Boston’s Cutting-Edge Industrial & Technology Ecosystem

The Greater Boston area—including key technological corridors like Cambridge's Kendall Square, the Route 128 high-tech belt, and the Waltham defense hub—is one of the world's most demanding environments for electromagnetic compatibility (EMC). As home to world-leading biotechnology institutes, high-mobility robotics pioneers, and Tier-1 defense contractors, the local market leaves zero margin for signal interference.

Modern medical imaging tools, autonomous warehouse drone swarms, and advanced radar systems all rely on dense RF layouts. The integration of high-speed digital processors alongside highly sensitive analog transceivers makes board-level electromagnetic interference (EMI) a critical threat to system operation. Our high-precision shielding frames are designed to isolate key RF circuits, guaranteeing maximum performance under stringent FCC part 15 rules and military standards.

Through our dedicated supply chain, we act as a reliable offshore production partner, delivering custom-manufactured, CE-compliant shielding frames directly to prototype houses, SMT assembly plants, and systems integrators throughout New England.

Stpete Electronics Manufacturing Plant

Macro-Level EMI / RFI Shielding Solutions & Material Science

Providing technical depth for hardware engineers working on demanding RF, microwave, and high-frequency digital designs.

Advanced Nickel-Silver & Brass Alloys

We work with high-quality Nickel-Silver (Cupronickel) and Tin-Plated Brass. Nickel-Silver is solderable, highly resistant to oxidation, and provides superior attenuation (up to 80dB in high-frequency regimes) without requiring subsequent plating operations.

Optimized Thermal Management & Ventilation

Our shielding frames feature calculated ventilation micro-hole patterns. These patterns maintain EMI attenuation integrity (ensuring hole diameters stay below λ/20 of the target frequency) while allowing heat dissipation and visual inspection of internal components during reflow.

Precise Coplanarity Tolerance <0.08mm

Using advanced multi-stage progressive stamping and CNC flattening, we maintain strict coplanarity across large footprint shields. This prevents cold solder joints and gap leakage, optimizing automated SMT pick-and-place lines.

Precision Testing & Quality Laboratory

Wenzhou Stpete Electronics Technology Co., Ltd.

Established in 2005, Wenzhou Stpete Electronics Technology CO., LTD is a high-tech enterprise specialized in the development, production, and sales of electronic connectors and customized precision shielding frames. We have built an excellent reputation among customers at home and abroad for top-tier product quality and highly efficient trading services.

Our modern manufacturing facility is fully equipped to produce IF Radio-Frequency Terminals, FCB Network Jacks, DC Power Outlets, USB Sockets, AV Pin Jack Boards, Radiators, and custom metal shielding cans. Using high-level progressive stamping machinery and high-speed CNC machines, we ensure exceptional accuracy and reliability for every production batch.

With an experienced R&D team of over 30 technical personnel, we continuously collaborate with global technology giants and top domestic brands like Huawei and Hisense to push the boundaries of high-speed high-frequency signal integrity.

20+
Years Industry Experience
500+
Project Completions
200+
Professional Employees
15M+
Annual R&D Investment (RMB)

Rigorous Quality Assurance & Certifications

Every step in our production is meticulously audited to guarantee absolute reliability on the PCB board.

For Wenzhou Stpete Electronics, quality is our primary focus. We believe that technological innovation combined with strict process control is the ultimate driver for industrial growth. From the initial raw material sourcing (utilizing certified premium metals) to on-line processing and post-production tolerance validation, every step is carefully logged.

Our facility holds certifications for ISO 9001:2015, ISO 14001, and ISO 45001 (successor to 18001). We own over 21 research and development patents, illustrating our commitment to design innovation. To ensure zero-defect integration at our customers' plants in Boston and globally, we employ optical image inspection machines, precision flat-bed scanners, and network analyzers for real-world RF verification.

Our integrated capabilities in insert molding, complex finished product assembly, and highly automated production lines allow us to scale from low-volume prototypes to high-speed high-volume production without compromising tolerances.

Automated Production Facility Inline Shielding Line

Tailored Application Scenarios in New England

How our shielding components address electromagnetic interference across key regional industries.

Clinical Medical Diagnostics

MRI components, point-of-care diagnostics, and patient monitoring wearables in Boston's hospital networks require exceptional signal integrity. Our multi-cavity shielding frames isolate sensitive pre-amplifier circuits from ambient high-frequency interference.

Autonomous Systems & Robotics

Warehousing and delivery robotics rely on high-frequency LiDAR, motor encoders, and RF communication modules. Our ruggedized, SMT-mountable frames block high-frequency switching noise from powerful DC motor drives, protecting sensor inputs.

Industrial Internet of Things (IIoT)

Smart factories deploy multiple sensors communicating via Zigbee, LoRa, or Wi-Fi. Our cost-effective, custom tin-plated steel shielding cans provide excellent near-field magnetic attenuation, ensuring stable sensor node operation in electrically noisy environments.

Technical Roadmap & Future Outlook

Supporting developers and engineers through the transition to next-generation RF designs.

As communications advance toward 5G-Advanced and millimeter-wave (mmWave) 6G architectures, traditional shielding methods face limitations. Higher frequencies reduce electromagnetic wavelengths, making even microscopic physical apertures potential RF leak paths. Our engineering roadmap addresses these challenges through three key development tracks:

  • Ultra-thin Drawing Shielding: Developing single-piece, seamless drawn-barrier structures that eliminate corner joint seams, boosting high-frequency attenuation up to 60 GHz.
  • Selective Polymeric Coatings: Combining traditional metal stamping with advanced conductive elastomeric gaskets to form hybrid shields that seal complex PCB topographies.
  • Automated In-Line Coplanarity Inspection: Using high-resolution laser scanning directly on our progressive dies to verify coplanarity at production speed, ensuring optimal yield for global customers.

Our Team & Corporate Culture

Fostering collaboration, communication, and technological progress.

We believe that strong internal teamwork leads directly to excellent customer service. To build unity and cooperation among our employees, Wenzhou Stpete Electronics organizes regular team-building activities, such as outdoor training programs.

These exercises encourage participants to step outside their comfort zones, build mutual trust, and develop creative problem-solving skills outside the typical office environment. This focus on collaboration helps reduce work-related stress, enhances overall morale, and drives our engineering and production teams to approach complex client requests with energy and focus.

Stpete R&D Department Collaborative Design

Technical FAQ - EMI/RFI Shielding

Answers to common design and sourcing questions from RF engineers and procurement specialists.

1. What material is ideal for board-level shielding frames?
For most high-reliability applications, Nickel-Silver (Cupronickel) is preferred. It offers excellent electrical conductivity, oxidation resistance, and is easy to solder. For cost-sensitive designs, Tin-Plated Steel or Tin-Plated Brass works well, though care must be taken to prevent edge oxidation post-cutting.
2. Why is coplanarity critical for SMT shielding frames?
Coplanarity refers to the maximum gap between the lowest and highest contact points of the shield's solder flange. If coplanarity exceeds 0.08mm to 0.1mm, SMT solder paste will not bridge the gap uniformly. This leads to cold solder joints, mechanical weaknesses, and RF gaps that compromise shielding effectiveness.
3. How do ventilation hole patterns affect shielding performance?
Ventilation holes are necessary to prevent heat build-up during reflow and operation. To maintain shielding integrity, the hole diameters must be significantly smaller than the wavelength of the target interference frequency (generally < λ/20). Keeping holes small and circular minimizes RF leakage.
4. Can you provide custom single-piece and two-piece shielding configurations?
Yes. We manufacture both configurations. Single-piece shields are ideal for cost reduction in high-volume runs. Two-piece shielding (consisting of an SMT-soldered frame and a snap-on cover) allows for easy maintenance, inspection, and tuning of internal RF circuits without unsoldering the frame.
5. How does Wenzhou Stpete support delivery to the Boston and East Coast markets?
We work with major international logistics providers to ensure fast, reliable delivery to Massachusetts. We offer air freight options for time-sensitive prototype stages and sea freight for high-volume production, coordinating documentation to ensure efficient customs clearance.

Advanced Facility & Quality Equipment

We maintain a modern manufacturing footprint with advanced tooling and validation instrumentation.

R&D Testing Area

Quality Control Testing

Meticulous validation processes verify structural dimensions and coplanarity profiles before batch shipment.

Stamping Machinery

Automated Production Strength

High-speed progressive tooling handles high-volume runs with stable, repeatable dimensions.

Material Inward Testing Lab

Advanced Raw Material Inspection

Every batch of raw material is checked to guarantee standard solderability and mechanical strength.

Original Sw 3D9 Original Sw 2W4-01 Original Sw 2R17-3 Original Sw 2R10-3 Original Sw 2M4-01 Original P-5661-G Original P-5563-K3 Original P-3650-K3 Original P-5661-K Original P-2235-G2 Original P-2052 Original P-1949-A Original P-3559-K1 Original DC098 Original DC080 Original DC0058 Original DC044 Original DC002T Original TYPE-C 08 Original TYPE-C 07 Original PJ 359 Original PJ 303 Original PJ 372 Original PJ 384 Original CC-PC Original USB 07 Original USB 06 Original DC012A Original USB 05 Original USB 04 Original PJ 306 Original DC012 Original DC015 Original SRX32 Original SRX29 Original SRX11