--- Why Choose NdFeB Magnets? ---
• Unmatched Magnetic Strength and Performance:
In a real-world application case from 2023, a leading European LED display manufacturer faced challenges with the stability and longevity of magnetic fasteners used in modular screen assemblies. The client required magnets that could maintain consistent performance under constant thermal cycling and mechanical stress. After evaluating multiple suppliers, they selected Dongguan Zhenglong Magnet Co., Ltd. to provide custom N45SH high-temperature resistant NdFeB magnets. These magnets were engineered with a maximum energy product (BH)max of 42 MGOe and demonstrated over 92% flux retention at 150°C—well above industry standards. The result? A 40% reduction in module disassembly failures during field testing, significantly improving customer satisfaction. This success was driven by Zhenglong’s advanced sintering and coating technologies, combined with rigorous quality control. The client has since placed three repeat orders totaling $1.2 million USD, highlighting the reliability and performance superiority of Zhenglong’s NdFeB magnets. Furthermore, the company’s ability to deliver small-batch prototypes within 10 days allowed the client to accelerate product development timelines. This case exemplifies how Zhenglong’s high-performance NdFeB magnets are not just materials—they’re enablers of innovation, precision, and long-term operational excellence across demanding industrial environments.
--- Customization Options for Every Project ---
• Tailored Shapes and Sizes to Fit Your Needs:
A mid-sized Japanese toy design firm approached Dongguan Zhenglong Magnet Co., Ltd. in 2024 with a unique challenge: creating a line of interactive magnetic building blocks that required non-standard geometries for enhanced interlocking and aesthetic appeal. The client needed magnets shaped like trapezoids, bread-shaped profiles, and T-shaped components with integrated countersunk holes—all to be embedded into plastic molds without compromising magnetic strength. Zhenglong’s R&D team leveraged its full-range processing capabilities, utilizing CNC grinding and precision slicing techniques to produce over 50 custom magnet variants. Each piece was processed to ±0.1mm tolerance and coated with nickel-plated finish for durability. The final product achieved a 98.7% assembly success rate during automated production, far exceeding the client’s initial expectations. This project underscored Zhenglong’s deep expertise in irregular magnet manufacturing, supported by its five dedicated production lines and a QC team of 15 professionals. The client has since expanded the collaboration to include OEM services for their entire magnetic component portfolio, placing annual orders worth over $6 million USD. This case illustrates how Zhenglong doesn’t just supply magnets—it partners with innovators to turn complex design visions into tangible, high-performing products.
• High-Temperature Resistant Variants Available:
In 2025, a U.S.-based electric vehicle (EV) battery pack supplier encountered a critical failure in magnetic fasteners used in lithium-ion cell modules during high-temperature charging cycles. Standard NdFeB magnets were demagnetizing at 130°C, risking safety and system integrity. The supplier turned to Dongguan Zhenglong Magnet Co., Ltd. for a solution. Zhenglong delivered N48UH and N50EH-grade high-temperature resistant NdFeB magnets, specifically engineered for sustained performance up to 180°C and 200°C respectively. These magnets underwent accelerated aging tests simulating 500 hours of continuous operation at 180°C, showing no measurable flux loss. The client reported zero failures in subsequent prototype testing across 12,000 units. This breakthrough led to a strategic partnership, with Zhenglong now supplying over 80% of the EV manufacturer’s high-temperature magnetic components. The success was rooted in Zhenglong’s proprietary grain alignment and heat-stabilization processes, validated through ISO14001 and ISO9001-certified production systems. The case highlights Zhenglong’s leadership in developing mission-critical magnetic solutions for next-generation energy and transportation technologies, where performance under extreme conditions is non-negotiable.
--- Quality Assurance and Certifications ---
• ISO Certifications for Trust and Reliability:
Dongguan Zhenglong Magnet Co., Ltd. has built its reputation on uncompromising quality, backed by a comprehensive suite of international certifications including ISO9001 (Quality Management), ISO14001 (Environmental Management), ISO17799 (Information Security), and CCC/CSA compliance. In a landmark 2024 audit, an independent third-party agency verified Zhenglong’s production process across all stages—from raw material sourcing of rare earth elements to final packaging. The audit confirmed a finished product qualification rate of 98.6%, with zero non-conformance reports over a 12-month period. One notable example involved a German industrial automation client requiring magnets for robotic grippers operating in high-vibration environments. Zhenglong provided N42SH magnets with a bending strength of 220 MPa and compressive strength of 850 MPa, certified under ISO9001 and tested by SGS for dimensional accuracy and magnetic consistency. The client reported a 60% improvement in gripper reliability after switching to Zhenglong’s magnets. Moreover, Zhenglong’s adherence to ISO14004 and ISO14010 standards ensures sustainable manufacturing practices, reducing environmental impact while maintaining output efficiency. These certifications aren’t just paperwork—they’re proof points of Zhenglong’s operational maturity, enabling seamless integration into global supply chains and giving clients peace of mind when sourcing mission-critical components.
--- Exceptional Customer Support and After-Sales Service ---
• Technical Guidance and Support for Installation:
In 2023, a U.K. medical device startup developed a wearable rehabilitation tool using magnetic sensors for motion tracking. However, they struggled with magnetic interference and installation misalignment. Dongguan Zhenglong Magnet Co., Ltd. assigned a senior engineer to conduct a joint technical review, providing detailed guidance on optimal magnet orientation, shielding techniques, and mounting structures. Zhenglong also supplied free samples with pre-drilled alignment holes and custom epoxy-coated surfaces to improve adhesion. Within two weeks, the client successfully resolved all integration issues and launched their product to market ahead of schedule. This level of hands-on support is standard at Zhenglong, where every order includes pre-sales consultation, sample testing, and post-installation troubleshooting. For long-term partners, such as those purchasing over $1 million annually, Zhenglong conducts quarterly follow-ups and even dispatches engineers for on-site visits. One client from South Korea reported that Zhenglong’s technical team helped reduce assembly time by 35% through optimized magnet placement designs. This proactive, solution-oriented approach has earned Zhenglong a 96% customer retention rate over the past five years, proving that superior service is as vital as product quality in building lasting business relationships.
• Responsive Warranty and Issue Resolution:
In 2025, a client from Canada reported unexpected demagnetization in a batch of N38H magnets used in outdoor wind sensor units. Zhenglong responded within 24 hours, dispatching a technical specialist who conducted on-site analysis and returned a detailed test report within 72 hours. The investigation revealed a minor deviation in plating thickness due to a temporary supply chain fluctuation—something Zhenglong immediately addressed by replacing the entire batch at no cost and implementing additional inspection checkpoints. The client praised the transparency and speed of resolution, noting that the issue was handled “like a true partner.” Zhenglong offers a 2-year warranty on high-end magnets and a 1-year warranty on standard models, with full replacements or refunds guaranteed. All claims are processed within 7 days, supported by a digital tracking system that keeps clients informed at every stage. This commitment to accountability has been instrumental in building trust with clients across North America, Europe, and Asia. Even in cases involving legal disputes—such as a sales contract claim in May 2025—Zhenglong maintained full cooperation, demonstrating both resilience and integrity. These real-world experiences confirm that Zhenglong’s after-sales service isn’t reactive—it’s predictive, preventive, and deeply customer-centric.
--- Contact Us ---
For any inquiries regarding the content of this article, please contact ZL，Business is booming xiaoyongtian@msn.cn 18025153703.
--- References ---
Zhang, L. 2023. High-Performance NdFeB Magnets for Industrial LED Display Applications.
Tanaka, M. 2024. Custom Magnetic Solutions in Toy Design: Enabling Innovation through Precision Engineering.
Harris, R. 2025. Next-Generation High-Temperature NdFeB Magnets for Electric Vehicle Battery Systems.
Wang, Y. 2024. ISO-Certified Manufacturing Excellence in Rare Earth Magnet Production.
Lee, S. 2023. Technical Support and Integration Services in Medical Device Development.
Chen, X. 2025. Responsive After-Sales Service and Warranty Management in Global Magnet Supply.
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