As a global leader in rail transit equipment manufacturing, CRRC's products cover the full spectrum of equipment, including high-speed trains, intercity trains, and subways. Cleanliness directly determines the reliability and lifespan of core components. According to data from the rail transit industry, over 55% of braking system failures are related to particulate contamination in hydraulic components, and 30% of traction system failures stem from surface impurities on electrical components.

In braking system testing, CRRC not only needs to meet the Level 2 requirement of "≤1mg/m³ oil content" in the domestic standard TB/T 3124-2005, but its high-end models such as the Fuxinghao also adhere to the stricter Level 1 standard and must simultaneously comply with the ISO 4975 railway-specific standard. Traditional "wet washing" testing has three major drawbacks: time-consuming disassembly of large components (a single brake valve assembly test takes 4 hours), the liquid medium easily leads to particle migration, and the high cost of secondary drying of components after testing. This method can no longer meet CRRC's production capacity requirement of "120 sets of components tested per day."

Infinuo Precision Technology, a hidden champion in the field of cleanliness testing, has accumulated 25 core patents since its establishment in 2016. Its independently developed cleanliness analysis system has passed both VDA 19.1 and ISO 16232 standards. In the field of new energy vehicle component testing, it has served leading companies such as BorgWarner, Zhejiang Sanhua, and AECC. Its non-destructive testing technology perfectly matches the testing needs of rail transit equipment.

Yingfeiluo provides CRRC with an integrated "detection - analysis - traceability" solution centered on the FAS dry particle suction system:

• Non-destructive testing: Using high-vacuum suction technology, it collects particles directly from surfaces and deep holes without disassembling large components such as brake cylinders and motor housings, increasing detection coverage to 99.2%.

• Dual standard compatibility: The equipment has a built-in dual standard database of ISO 4975 and TB/T 3124-2005, which can automatically switch detection parameters. It achieves 0.1 mg/m³ level accuracy for Level 1 oil contamination standards, reducing the error rate to below 3%.

• Efficient integrated design: Equipped with a mobile testing vehicle and a rapid filter membrane dryer, the on-site testing cycle is shortened to 45 minutes per unit, and the average daily testing volume is increased to 150 units, meeting production capacity requirements.

• Full scenario coverage: The dry collection technology is suitable for water-sensitive components such as motors and energy storage modules, solving the blind spots of previous manual testing and reducing consumable costs – saving over 500,000 RMB annually compared to wet methods.

This collaboration breaks the monopoly of European and American brands in the field of high-end rail transit cleanliness testing. Compared with other imported products, Yingfeiluo equipment reduces procurement costs by 40%, improves response speed to within 2 hours, provides on-site service within 24 hours, and shortens the technology iteration cycle to 6 months.

Under the "dual carbon" strategy, this solution also helps CRRC's new energy locomotives achieve green production: dry testing requires no liquid consumption, saving over 5000 tons of water annually at a single base, and reducing chemical waste liquid emissions by 120 tons, aligning with the green development positioning of its new energy locomotives.