WaFu Brothers Partners with Dongguan Hongzan to Optimize Cold Plate Seal Testing Solutions

WaFu Brothers and Dongguan Hongzan Form Partnership to Optimize Cold Plate Seal Testing Solutions

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June 21, 2025

WaFu Brothers has officially signed a cooperation agreement with Dongguan Hongzan Technology Co., Ltd. The two parties will collaborate deeply on seal testing for cold plate products. Hongzan's technical team visited Shenzhen to work closely with WaFu Brothers’ engineers, jointly exploring and validating leak testing solutions for cold plates in the production process—pushing forward coordinated development in the field of advanced manufacturing.

1. Precision Requirements Drive Collaboration — Seal Testing Becomes Critical

As a core component of thermal management systems, cold plates are widely used in 5G communications, new energy vehicles, and high-performance servers. Their internal structure must remain highly airtight to ensure stable coolant circulation. Any leakage can severely impact cooling efficiency and pose safety risks. Therefore, high-precision leak testing is essential before cold plates leave the factory to ensure long-term reliability.

Dongguan Hongzan has long faced challenges such as inconsistent sealing and low manual testing efficiency in cold plate production. After evaluating multiple equipment suppliers, they chose to partner with WaFu Brothers, who brings 16 years of experience in seal testing technology.

2. Tailored Solution for Cold Plate Leak Detection

Considering the complex structure and diverse interfaces of cold plates, WaFu Brothers customized a differential pressure-based seal testing solution for Hongzan. The solution integrates precision sensor control, intelligent algorithm analysis, and custom sealing fixtures, allowing for fast and accurate detection of microleaks—significantly improving test efficiency and consistency.

During multiple rounds of joint testing, both teams optimized key aspects such as test accuracy, flow process, and interface sealing adaptation. Eventually, they established standardized test parameters for various cold plate models, complemented by an automatic data recording system for full traceability.

To align with Hongzan’s smart factory management workflow, WaFu Brothers also delivered MES system integration, enabling real-time uploading and archiving of each cold plate's test results—building a more efficient and transparent quality control system.

3. Technical Collaboration Empowers Manufacturing Upgrades

Through this collaboration, Dongguan Hongzan has achieved automation and digital transformation in leak testing, enhancing the reliability of its cold plate products. Both parties expressed intent to expand cooperation across more product lines, including liquid cooling modules and integrated pipe components.

WaFu Brothers remains committed to customer-oriented innovation, continuously advancing seal testing technology from standardization to intelligent, high-precision solutions. Whether in new energy, electronics, medical devices, or thermal management sectors, WaFu Brothers strives to deliver stable, efficient, and scalable seal testing solutions.

4. Looking Ahead — Focusing on Seal Testing Innovation

As industrial manufacturing continues to evolve, sealing performance is becoming a critical indicator of product quality and reliability. Poor sealing not only causes energy loss but also creates serious safety risks. In the future, leak testing will become a core quality control step across many manufacturing industries.

WaFu Brothers will continue its mission of becoming a leading brand in China’s precision seal testing equipment sector. By deepening cooperation with industry leaders, we aim to promote technical innovation, drive the establishment of industry standards, and support the advancement of high-quality manufacturing in China.