Breakthrough in Pure Iron Technology: China Breaks Monopoly, Says Goodbye To High Prices And Dependency

In the beginning of 2026, a major surprise occurred in the international high-end materials circle: The two giants that had monopolized the ultra-pure iron technology for half a century suddenly slashed their pricing by two-thirds overnight. They also came to China with a request for cooperation related to the DT4C AC Relay Iron Core, a component.

Everyone was wondering what fatal weakness these giants, who had made huge profits through technology monopolies and choked China's development, had been exposed to? Some said China had obtained their core secrets, while others guessed they had come up with alternative technologies. But the key to all this was closely related to the breakthrough in the core material of DT4C Iron Core. No one expected that the answer was hidden in a seemingly ordinary "iron".

This iron was once sold by the US and Japan by the kilogram and was as precious as gold. Now, it has been made into a bargain price in China, completely cutting off their source of income.

Some may wonder why iron, which is everywhere, could affect the nerves of international giants? The key lies in the word "purity". The manufacturing of Core Pin requires extreme purity of iron. The ultra-pure iron we talk about needs to reach the 5N level, with a purity of over 99.999%, with extremely low impurities. Ten thousand tons of ultra-pure iron has a total impurity of less than 8 kilograms, which is the real data from a third-party authoritative test. While the traditional industrial pure iron in China has a purity of only 2N to 3N, compared with ultra-pure iron, it is like gravel and diamonds, with a huge performance difference.

In March 2024, the stable 5N2 grade ultra-pure iron was officially launched. The Relay Pin made with this material will also achieve a significant performance improvement. After testing, the purity reaches 99.9992%, with gas impurities at 4.5 ppm, metal impurities at 3.2 ppm, and total impurities at only 7.7 ppm, reaching the world's top level. More importantly, it has achieved mass production, and an exclusive production line has been established. The annual output of 5N grade is 200 tons, and the 4N grade reaches 800,000 tons. The cost is only one-fifth of the imported price, completely reversing the inflated pricing.

This breakthrough directly rewrites the global landscape. Japanese companies related to photoresist have urgently reduced prices by 37%, and American companies have actively sought cooperation. Domestic ultra-pure iron has also brought new opportunities for the domestic manufacturing of the Cold Forging Relay Core. Domestic ultra-pure iron has been applied to domestic lithography machines, compatible with 7-nanometer and below processes, performing better than imports, and has passed the tests of China Aviation Engine Bearings, improving the fatigue life of components.

In the ultra-high voltage field, after using domestic ultra-pure iron, the transmission loss per 1,000 kilometers is reduced to 0.71%, saving 33.3 billion kilowatt-hours of electricity per year, equivalent to one-third of the annual power generation of the Three Gorges Dam. The Pure Iron Core also becomes more stable due to the application of ultra-pure iron.

As of February 2026, China has cumulatively obtained more than 150 patents related to ultra-pure iron. Shanghai University and its cooperating enterprises jointly hold 42 core patents, achieving full chain self-control. This also brings new opportunities for the domestic manufacturing of the Soft Magnetic Iron Cores for Relays. Domestic ultra-pure iron has been applied to domestic lithography machines, compatible with 7-nanometer and below processes, performing better than imports, and has passed the tests of China Aviation Engine Bearings, improving the fatigue life of components.

In the ultra-high voltage field, after using domestic ultra-pure iron, the transmission loss per 1,000 kilometers is reduced to 0.71%, saving 33.3 billion kilowatt-hours of electricity per year, equivalent to one-third of the annual power generation of the Three Gorges Dam. The Pure Iron Relay Core also becomes more stable due to the application of ultra-pure iron.

As of February 2026, China has cumulatively obtained more than 150 patents related to ultra-pure iron. Shanghai University and its cooperating enterprises jointly hold 42 core patents, achieving full chain self-control. This also brings new opportunities for the domestic manufacturing of the DT4C Iron Core. Domestic ultra-pure iron has been applied to domestic lithography machines, compatible with 7-nanometer and below processes, performing better than imports, and has passed the tests of China Aviation Engine Bearings, improving the fatigue life of components.

The team has not stopped. They have initiated the research on 6N grade extremely pure iron and large-sized iron single crystals. In the future, these higher-purity materials will further empower the high-end development of the Cold Forging Relay Core. The goal is to provide material support for quantum computing and nuclear fusion and other cutting-edge fields.

From relying on high prices and imports to achieving affordable and self-produced production, from being locked out by technology to mastering pricing power, the breakthrough of China's ultra-pure iron has enabled the Pure Iron Core to achieve self-control of the core material. The "overcoming" of China's ultra-pure iron by scientific researchers is a manifestation of their unyielding spirit and is also a reflection of China's transformation from a steel power to a material power.

The United States and Japan want to lock China's industrial chain through technical barriers, but underestimated the "the more we are blocked, the more determined we are" spirit of the Chinese people. Their attempts to control the core material of the Pure Iron Relay Core have completely failed with the breakthrough of China's ultra-pure iron technology. The breakthrough of ultra-pure iron not only reduces the cost of high-end manufacturing but also strengthens the supply chain security defense. In the future, more "blocked" technologies will be broken through one by one. This is the power of China, not provoking trouble, but not afraid of trouble, breaking monopolies through independent innovation, and winning respect with hard power.

Based on the breakthrough of domestic ultra-pure iron technology, we have launched the DT4C AC Relay Iron Core, which is made from high-purity industrial pure iron. It has excellent magnetic conductivity, low loss, and strong stability, perfectly matching various AC relays and industrial control equipment. It can effectively improve the operational accuracy and service life of the products, and fully replace imported similar core products.

We welcome all customers to inquire, select, and place orders. Let's join hands to build an independent and controllable high-end component supply chain together!