On January 27, 2026, at the intelligent and modern factory of Ningbo Yijun Technology Co., Ltd. (hereinafter referred to as "Ningbo Yijun Technology"), a batch of M1.6 small screws, embodying the crystallization of precision manufacturing technology, completed production quality inspection and were officially packed and shipped to the Italian customer. This batch of screws, with a tolerance control capability of ±0.002 mm, once again demonstrates the hard power of China's high-end manufacturing to the global market.
The M1.6 small screws delivered this time have a diameter of only 1.6 mm, and their thread precision, material strength, and surface treatment difficulty far exceed those of conventional products. Ningbo Yijun Technology adopts a fully digital production line, integrating CNC turning centers and optical inspection equipment, realizing unmanned operation from blank processing to finished product inspection. The optical inspection equipment scans the screw surface with micron-level precision, accurately identifying dimensional deviations as small as 0.01 millimeters, ensuring that every screw meets the stringent tolerance standards of Italian customers.
“These screws will be used in core components of high-end precision instruments in Italy, where even the slightest error can affect equipment stability,” said the Quality Director of Ningbo Yijun Technology. “Through infrared detection technology, we have reduced the defective product miss rate from the industry average of 3% to 0.05%, while increasing inspection efficiency by 5 times, fully meeting the delivery cycle requirements of the European market.”
Founded in October 2025, Ningbo Yijun Technology, though a newcomer to the industry, has rapidly risen through technological innovation. Initially, the company accumulated experience by importing German infrared inspection equipment, and by early 2026, it had achieved independent development of its core algorithms. Its screening machine's PLC control system can automatically adjust detection parameters according to different product characteristics; for example, it has improved the roundness detection accuracy of nut inner holes from 0.1 millimeters to 0.03 millimeters, reaching the same level as leading international brands.
“We invest 15% of our revenue in R&D annually and currently hold three patents related to infrared detection,” revealed Hou Hui, the company's founder. “Our next plan is to integrate AI visual recognition with infrared spectral analysis to build a more intelligent defect prediction model, further solidifying our technological barriers.”
This Italian order includes 500,000 screws and nuts in 12 different specifications, intended for use in the assembly of battery packs for new energy vehicles in Europe. The client emphasized that the testing reports provided by Ningbo Yijun Technology meticulously recorded the infrared spectrum and dimensional data of each product, providing crucial information for optimizing subsequent assembly processes. “This level of transparency is extremely rare in European and American supply chains,” commented an Italian client representative after visiting the testing process.
As a major fastener production base in China, Ningbo boasts over 2,000 related companies, but the high-end market has long been monopolized by German and Japanese companies. The case of Ningbo Yijun Technology reflects the transformation trend of Ningbo's manufacturing industry—reshaping the supply chain through technological innovation and becoming a key force in becoming a global intelligent manufacturing innovation hub.
Currently, Ningbo Yijun Technology's main products cover miniature screws ranging from M0.5 to M3. With their high precision, high strength, and corrosion resistance, these screws are widely used in precision assembly of spacecraft, minimally invasive instruments in medical equipment, and core components of high-end electronic products. The company has passed ISO9001 international quality management system certification and has established a standardized system covering the entire process from raw material procurement to finished product delivery.
"Our goal is not to become the largest screw manufacturer, but to become an irreplaceable technological solution in the field of micro-precision manufacturing," said Hou Hui. "In the future, we will continue to deepen our digital and intelligent transformation, helping China's high-end manufacturing reach a higher level." At this moment, on Ningbo Yijun Technology's testing line, another batch of screws and nuts, soon to be shipped to Germany, is passing through the infrared scanning area. With each flash of the beam, the precision genes of "Made in China" are crossing oceans, etching a new coordinate in the global industrial chain.
