Direct supply of high-precision board-level shielding products with optimized coplanarity, strict mechanical tolerances, and outstanding solderability.
Vietnam has rapidly transitioned into a pivotal global hub for high-tech electronics manufacturing. Driven by significant foreign direct investment (FDI) in regions such as Bac Ninh, Bac Giang, Dong Nai, and Binh Duong, the demand for highly reliable electromagnetic interference (EMI) shielding solutions has scaled exponentially. Complex circuits operating at high frequencies—such as those found in 5G smartphones, IoT devices, automotive ECUs, and smart home appliances—require robust board-level shielding (BLS) to guarantee signal integrity and prevent electromagnetic compatibility (EMC) failures.
As a leading high-tech enterprise, Wenzhou Stpete Electronics Technology Co., Ltd. has established a sophisticated supply network tailored specifically to the requirements of the Vietnamese market. Through the implementation of advanced materials, ultra-precise metal stamping technologies, and strict compliance with global quality guidelines, we provide shielding frames that deliver superior performance in automated high-speed SMT assembly lines.
The electronics manufacturing map of Vietnam is characterized by distinct regional clusters. In the North, provinces like Bac Ninh and Bac Giang host massive assembly plants for multinational giants including Samsung, Foxconn, and Luxshare Precision. In the South, Ho Chi Minh City, Dong Nai, and Binh Duong focus on telecommunications equipment, computer peripherals, and consumer electronic sub-assemblies. These advanced assembly lines run high-density SMT (Surface Mount Technology) processes where components are placed at micro-second intervals.
In this high-precision environment, shielding frames are essential to shield critical RF transceivers, microprocessors, and baseband modules. The humid, tropical climate of Vietnam introduces additional environmental challenges. Shielding frames must not only exhibit optimal electrical conductivity and magnetic permeability but also demonstrate long-term resistance to oxidation. Stpete's shielding frames utilize premium raw materials such as pre-plated tin steel (SPTE) and nickel silver (C7521), ensuring consistent solderability and corrosion resistance throughout the lifespan of the device.
Years of Specialized Manufacturing Experience
Industrial Projects Successfully Completed
Skilled, Professional Production Staff
Global procurement teams targeting the Vietnamese manufacturing base require suppliers to comply with stringent electronic performance parameters. The foremost metric is coplanarity control. If a shielding frame has a coplanarity deviation exceeding 0.08mm to 0.1mm, it will result in critical open-solder joints or short circuits during the reflow soldering process. This results in costly manual rework or entire board scrap rates.
Stpete addresses this through progressive stamping dies engineered to extremely tight tolerances and automated 3D optical inspection systems. Our shielding cans and frames feature integrated thermal venting holes to optimize airflow during reflow, avoiding thermal buildup that could warp the PCB. Additionally, we provide custom tape-and-reel packaging compatible with standard high-speed pick-and-place equipment, facilitating seamless integration on the factory floor.
| Shielding Material | Shielding Effectiveness (dB) | Solderability Performance | Corrosion Resistance (Salt Spray) | Primary Application Areas |
|---|---|---|---|---|
| Nickel Silver (C7521) | 65 - 85 dB (up to 10 GHz) | Excellent (No plating required) | Excellent (>48 Hours) | Smartphone RF modules, high-frequency telecom, IoT gear |
| Tin-Plated Steel (SPTE) | 55 - 75 dB (up to 5 GHz) | Good (Highly Cost-Effective) | Good (>24 Hours) | Smart TVs, automotive electronics, power supplies |
| Stainless Steel (SUS304) | 50 - 70 dB | Requires selective pre-tinning | Outstanding (>96 Hours) | High-strength structural shielding, outdoor equipment |
Established in 2005, Wenzhou Stpete Electronics Technology Co., Ltd. is a certified high-tech enterprise specializing in the development, high-precision production, and global sales of electronic connectors and customized structural hardware. Over the last two decades, we have built a solid reputation among leading electronic manufacturers in domestic and international markets by maintaining strict standards of product quality and reliable trading services.
Equipped with state-of-the-art high-speed precision punching machines, multi-axis CNC processing centers, and automated assembly systems, Stpete serves as a reliable partner in the electronic component supply chain. Our product portfolio ranges from high-frequency RF terminals, network jacks, DC power outlets, and USB Type-C connectors to custom-engineered radiator heat sinks and PCB board-level shielding frames.
At Stpete, quality is verified through structural testing. We maintain a full suite of inspection equipment, including 3D coordinate measuring machines (CMM), optical video measuring systems, solderability testers, and salt spray testing chambers. Every incoming raw material batch undergoes strict inspection before reaching the stamping press, ensuring that thickness tolerances, tensile strength, and metallurgical compositions align with design specifications.
Our quality management framework is fully certified under ISO 9001, ISO 14001, and OHSAS 18001 standards. Through strict gate inspections at every phase of the manufacturing process, we eliminate defects before products are packaged. This focus on reliability has enabled us to secure multiple technology patents and establish strategic partnerships with top-tier technology brands, including Huawei and Hisense.
Combining automated precision manufacturing with cross-border logistics to secure your components supply chain in Vietnam.
Our R&D team comprises over 30 engineers with deep expertise in progressive die design. We invest more than 15 million RMB annually in structural research, yielding 21+ active technology patents. This strength allows us to design, prototype, and manufacture custom shielding frames with complex geometric shapes within short lead times.
By leveraging automated stamping, continuous reel-to-reel plating, and integrated visual inspection systems, we ensure high production volume while maintaining part-to-part consistency. These capabilities are designed to prevent typical stamping defects such as burrs, surface contamination, and dimensional warpage.
Located in the coastal industrial zone of Wenzhou, China, Stpete benefits from proximity to major international shipping routes. We offer flexible, fast logistics options to major Vietnamese industrial hubs, including direct container routes to Haiphong Port in Northern Vietnam and Cat Lai Port in Ho Chi Minh City, helping to minimize shipping lead times.
Our dedicated engineering department focuses on matching our technical capabilities with the dynamic requirements of high-frequency electronic designs. By utilizing finite element analysis (FEA) and electromagnetic wave simulation software, we can predict the performance of potential shielding configurations before metal stamping begins. This preventive approach reduces prototyping cycles and assists OEM customers in passing regulatory EMC testing on the first attempt.
Our collaborative project workflow ensures that when electronics manufacturers in Bac Ninh or Ho Chi Minh City present a challenge involving high-density component layouts or restricted design heights, our engineering team can quickly propose customized solution concepts. We optimize the physical geometry of the shielding frame to facilitate SMT picking, improve heat dissipation, and maximize structural rigidity.
To support high-volume, reliable component supply, Stpete utilizes advanced manufacturing processes, including automated insert molding, high-speed progressive metal stamping, and specialized mechanical assembly. Our stamping presses operate in a temperature-controlled environment to prevent thermal expansion of critical tool components, maintaining consistency across production runs of millions of shielding parts.
We continuously invest in upgrading our stamping machinery to maintain high quality. By automating the manufacturing flow from strip decoiling to stamping, optical inspection, and carrier tape packaging, we minimize human contact. This reduces the risk of accidental physical damage and contamination, ensuring that the shielding frames arrive at the customer's assembly line ready for immediate solder reflow.
With global supply chain patterns shifting toward a "China + 1" approach, having a reliable component supplier that can bridge Chinese production efficiency with Vietnamese SMT assembly lines is a strategic asset. Stpete operates high-capacity production lines that can scale output to meet surge demands during seasonal production peaks.
We maintain raw material reserves of key shielding alloys, including pre-plated tin, nickel silver, and stainless steel, to buffer against raw material market volatility. By partnering with Stpete, electronics manufacturing services (EMS) providers in Vietnam gain a reliable manufacturing partner capable of supporting continuous production schedules.
Beyond our manufacturing equipment, our engineering, logistics, and quality assurance personnel are central to our operational quality. Stpete invests in ongoing employee training program covering precision stamping technologies, ISO standards, and cross-border trade operations. To strengthen cohesion and foster teamwork, our company regularly organizes team-building and professional development activities.
These initiatives promote collaboration across our corporate structure. When customer support, engineering, and logistics teams communicate effectively, the processing of custom orders, design adjustments, and shipping logistics runs more smoothly. This cross-departmental coordination translates directly into responsive, reliable customer service for electronics procurement teams in Vietnam and worldwide.
Complete selection of board-level shielding frames, RF shields, and protective cans designed for high-density SMT PCB layouts.
Expert insights on selecting materials, ensuring coplanarity, and optimizing board-level shielding performance.
Nickel Silver (C7521) is a copper alloy containing nickel and zinc. It offers excellent electrical shielding effectiveness, natural corrosion resistance, and does not require secondary plating, which simplifies the soldering process on SMT lines. Tin-Plated Steel (SPTE) is a cost-effective alternative that provides good magnetic permeability and shielding at lower frequencies. However, under high-humidity conditions, tin-plated steel is more susceptible to oxidation along exposed sheared edges than nickel silver.
We control coplanarity through a combination of engineering design and quality control steps: (1) We design progressive stamping dies with built-in stress-relief features to prevent metal deformation. (2) We utilize precise optical laser scanning equipment to verify the flatness of each production batch. (3) We pack the stamped shielding frames in structured tape-and-reel or thermoformed trays to prevent deformation during transit to the assembly site.
Yes. Our engineering department can design customized shielding frames from customer-supplied 3D CAD files (STEP/IGS format). We can incorporate custom features, including structural internal partitions for multi-cavity designs, snap-on clip mechanisms, specialized pick-up targets for SMT nozzles, and thermal venting patterns to optimize air convection during solder reflow.
For standard components, tooling is already established, and we can ship stock items within 7 to 10 days. For custom tooling and new product designs, the development phase generally requires 15 to 21 days for tool fabrication and sample generation, followed by mass production. Shipping transit times from Wenzhou to Northern ports like Haiphong or Southern ports like Cat Lai in Ho Chi Minh City range from 5 to 7 days, depending on ship schedules.
Yes. All raw metal materials, plating chemistries, and rust preventative oils used in Stpete's manufacturing lines are certified RoHS and REACH compliant. We supply material analysis reports and certification documentation with each batch to support compliance auditing requirements for global electronics markets, including the EU and USA.
Stpete Electronics