Case show

The cleanliness inspection equipment has been successfully delivered to Chongqing Junli Sealing Technology Co., Ltd., with the entire service process—equipment mobilization, installation and commissioning, and operator training—completing smoothly. The equipment is now officially in operation, establishing a robust core safeguard for Junli Sealing’s product quality control and helping the company deepen its expertise in the sealing components sector while enhancing its core competitiveness.

Chongqing Junli Sealing Technology Co., Ltd. was established in 2004 and specializes in the R&D, manufacturing, and sales of rubber seals and vibration-damping products for automobiles, motorcycles, and general-purpose machinery. The company serves as a core supplier to renowned enterprises such as Bosch, Valeo, and Huayu SanDian, providing specialized sealing solutions to automakers including Tesla, Volkswagen, and Zongshen. In addition, Junli has deeply cultivated the field of sealing for power batteries in new-energy vehicles, with an annual production capacity of 180 million units and stringent requirements for product precision and reliability.

Seals are critical core components in automobiles, motorcycles, and general-purpose machinery; their cleanliness directly determines sealing performance, service life, and system safety. Even minute particles and residual oil contamination can readily lead to seal failure, blockage of lubrication lines, and component wear, which not only damage the product’s reputation but may also result in after-sales claims and failure to pass customer audits. The cleanliness-testing equipment delivered this time is rigorously compliant with industry standards such as ISO 16232 and VDA 19, precisely tailored to meet Junli Seals’ primary testing needs for rubber seals and vibration-damping products. It enables the extraction, filtration, analysis, and quantitative measurement of residual particulates on both the surface and within the seals, allowing rapid screening for contaminants such as metal shavings, sand grains, and fibers, accurate determination of cleanliness grades, and effective prevention of contamination risks at the source.

During the delivery period, our technical team maintained a full-time on-site presence and rigorously followed standardized procedures to complete equipment mobilization and calibration, as well as installation and commissioning, thereby ensuring stable equipment operation and accurate test data. In addition, tailored one-on-one operational training was conducted specifically for Junli Sealing’s production environment, covering all aspects of equipment operation, parameter tuning, routine maintenance, fault diagnosis, and test report generation, to ensure that relevant personnel master the skills required for equipment use and that the testing process is implemented efficiently.

This equipment delivery not only addresses Junli Sealing’s capability gap in precision cleanliness testing and enhances its end-to-end quality management system, but also helps the company meet OEM cleanliness audit requirements, improve product pass rates, reduce after-sales costs, and provide strong support for expanding into the new-energy sealing market and consolidating its industry position.

Looking ahead, we will continue to provide comprehensive technical support and after-sales service, conduct regular equipment inspections, maintenance, and upgrades, and promptly respond to Junli Sealing’s testing requirements. Together, we will deepen our expertise in seal quality control, leveraging state-of-the-art equipment and attentive service to help Chongqing Junli Sealing Technology Co., Ltd. consistently deliver high-quality sealing products, achieve sustainable, high-quality growth, and set new industry benchmarks!