Recently, Yudian was officially recognized as a  national-level Specialized, Refined, Characteristic, and Innovative (SRCI)  "Little Giant" Enterprise by China’s Ministry of Industry and Information Technology and has also inaugurated a dedicated brand space in Xiamen Metro.

Through the train windows, an expanse of azure sea and blue sky unfolds, while inside the train, the company’s blue-and-green logo shines vibrantly. This warm winter season marks the launch of the "Specialized Innovation Leading the Future" themed brand train, a collaboration between the Xiamen Municipal Bureau of Industry and Information Technology and Xiamen Metro. From now until February 14 next year, anyone boarding Xiamen Metro trains can step into the brand space jointly created for Yudian by the two entities.

On the display panels between subway windows and exits, the slogan “Pioneer in Intelligent Industrial Temperature Controllers” embodies Yudian’s long-standing vision. Today, the company has rightfully established itself as a leading brand in China’s temperature control instrument industry.

 Since its founding in 1991, Yudian has remained dedicated to the research and production of intelligent temperature controllers. This year, with the completion of a 64,000-square-meter production base, its planned annual production capacity has reached 10 million units, propelling the company to a global leading position in industrial scale. Its products are widely used across all sectors of the national economy, particularly achieving significant import substitution in high-end manufacturing fields such as semiconductors, photovoltaics, and lithium batteries.

In recent years, Yudian has led with innovation, dedicating itself to the research and development of critical products. In the field of precision temperature control, the company has overcome long-standing "bottleneck" challenges posed by foreign technological monopolies. Through its presence on the brand train, Yudian is showcasing a diverse range of products designed to meet the increasingly sophisticated temperature control needs across various industries.

AI-8x48 High-precision Temperature Controller

Exclusive for Semiconductor Equipment

The semiconductor industry, as a strategic cornerstone of national strength, serves as an indispensable technological foundation for countries developing high-end science and technology. In the field of semiconductor temperature control, Yudian stands as the only domestic temperature controller brand successfully integrated into high-precision semiconductor equipment. By breaking foreign technological monopolies, it has filled the gap in temperature control applications for core semiconductor equipment, preventing China from facing critical "bottleneck challenges" in key high-end industries such as semiconductor microelectronics equipment, photovoltaic solar cell production equipment, and crystal growth equipment.

The semiconductor industry has extremely stringent requirements for quality control. Yudian has proactively adopted the quality management standards of leading domestic semiconductor enterprises and established a comprehensive quality certification management system. Its high-performance and high-quality products have gained recognition within the industry, and the company has currently established partnerships with multiple leading domestic semiconductor enterprises.

The AI-8x48 High-precision Temperature Controller Exclusive for Semiconductor Equipment, featured on this brand train, offers a maximum 0.05 accuracy class and a measurement resolution of up to 0.001°C. It also features high stability, outperforming imported counterparts of the same class. The product has been rated as internationally advanced by authoritative experts from institutions such as Tsinghua University and the Chinese Academy of Sciences.

AI-8x89G Multi-loop Cascade Temperature Controller

Exclusive for Photovoltaic Industry

Against the backdrop of the photovoltaic industry’s rapid growth, energy saving and cost reduction have become universal demands for enterprises. In particular, technology-driven energy saving, cost reduction, and efficiency improvement have emerged as a critical pathway for many photovoltaic companies to achieve these goals.

Temperature control technology is key to ensuring production efficiency and product quality. To address this, Yudian has introduced the AI-8x89G Multi-loop Cascade Temperature Controller, which enables highly precise and stable temperature control while effectively reducing energy consumption.

This product not only integrates five proprietary 24BIT high-performance, low-noise, low-temperature drift A/D conversion chips developed exclusively by Yudian, enabling multi-loop cascade control, but also provides four high-voltage resistance, fully isolated thermocouple input interfaces. These features effectively reduce interference, enhance accuracy and stability, and ensure safety protection. The multi-channel design offers greater flexibility and scalability, perfectly meeting the energy-saving and efficiency-improvement needs of photovoltaic processes.

This product not only integrates five proprietary 24BIT high-performance, low-noise, low-temperature drift A/D conversion chips developed exclusively by Yudian, enabling multi-loop cascade control, but also provides four high-voltage resistance, fully isolated thermocouple input interfaces. These features effectively reduce interference, enhance accuracy and stability, and ensure safety protection. The multi-channel design offers greater flexibility and scalability, perfectly meeting the energy-saving and efficiency-improvement needs of photovoltaic processes.

AI Series Multi-Loop High-Performance Temperature Controllers

Exclusive for Lithium Battery Industry

In the wave of the rapid development of the new energy industry, competition in the lithium battery industry has intensified, and the industry's awareness of energy conservation and consumption reduction has increased. In each production process of lithium batteries, "temperature control" is the key technology to achieve energy conservation and efficiency improvement.

In response to the growing challenge of energy conservation and cost reduction in large-scale lithium battery manufacturing, Yudian has aimed at the dual goals of cutting energy consumption and ensuring a high yield rate. The company has developed a series of high-reliability, high-performance temperature controllers exclusive for lithium battery equipment. Currently, hundreds of thousands of Yudian temperature controllers are deployed in lithium battery manufacturing processes including coating, winding, lamination, formation, and baking. According to on-site production line tests by a top lithium battery manufacturer, the rework rate is below 0.1%.

Meanwhile, tailored to the harsh high-temperature operating conditions common in the lithium battery industry, Yudian’s high-temperature testing standards far exceed industry norms. Through a stringent material selection process for high-temperature resistance, our controllers are capable of stable operation in environments up to 130°C—maintaining temperature control accuracy within ±0.5°C even under such extreme conditions. This ensures both product safety and long-term reliability, critical for preventing thermal runaway and optimizing yield in lithium battery manufacturing processes like formation and baking.

Boasting high reliability and superior performance, Yudian’s multi-channel precision temperature controllers have been adopted by leading lithium battery manufacturers like CATL, BYD, and ATL. This has helped the company gain wide industry recognition for its solutions in the sector.

It is understood that the Xiamen Metro Brand Train Campaign was initiated by the Xiamen Municipal Bureau of Industry and Information Technology. As a national-level SRCI (“Specialized, Refined, Characteristic, and Innovative”) Little Giant Enterprise, Yudian’s debut on this brand train serves as a significant encouragement and support for the company's development.

In the future, Yudian will double down on innovation, maintain its leading edge in precision temperature control, and strive to boost urban industrial upgrading through technological breakthroughs while driving global advancements in temperature control technology.