Ding Long Co., Ltd. 300-ton Photoresist Project Commences Production, Achieving Breakthrough in Advanced Semiconductor Materials

Securities Times Reporter Liu Qian

On the evening of March 19, Dinglong Co., Ltd. (300054) announced that the main factory building and supporting facilities of the “Annual Production of 300 Tons KrF/ArF Photolithography Resin Industrialization Project” invested and constructed by its holding subsidiary Dinglong (Qianjiang) New Materials Co., Ltd. have been completed and have recently been put into operation smoothly.

The announcement shows that this project is the country’s first high-end wafer photolithography resin mass production line covering the entire process from “organic synthesis—polymer synthesis—refinement and purification—photoresist mixing.” It has advantages in product model and process coverage, self-made core raw materials, and verification platform resources for lithography machines.

Dinglong Co. states that the highly automated flexible production line can support multi-category market coverage. The company has already built more than 30 finished product lines and reserved equal-scale expansion space, allowing flexible capacity increase based on market demand. The product range covers all sizes used in chip manufacturing, effectively meeting the urgent needs of downstream wafer foundries for key materials. The company’s ArF and KrF photoresist products cover all process technology nodes of domestic wafer fabs and are widely used in high-end storage (3D NAND, DRAM) and high-performance logic devices.

At the same time, the company has solved the supply chain bottleneck for key raw materials, breaking through supply chain security issues. The announcement indicates that the company has multiple raw material synthesis and purification lines, with core production lines for organic synthesis and polymer synthesis, enabling autonomous supply of key raw materials such as core resins, special monomers, and photoacid generators, overcoming domestic supply difficulties for high-end photoresist raw materials.

Dinglong Co.'s main business spans two major sectors: semiconductor and general consumables for printing and copying. Currently, the company is focusing on innovative materials for semiconductors, covering CMP process materials for semiconductor manufacturing, wafer photoresists, semiconductor display materials, and advanced packaging materials.

Previously released earnings forecasts show that Dinglong Co. expects to achieve a net profit attributable to shareholders of approximately 700 million to 730 million yuan in 2025, representing a year-on-year increase of about 34.44% to 40.20%. The profit growth is mainly attributed to the strong growth in semiconductor and display materials businesses, along with ongoing cost control and lean operation efficiency.

The company states that it has already developed over 30 high-end wafer photoresist products, including immersion ArF and KrF photoresists that meet the urgent needs of domestic core wafer fab customers. More than half of these products have been sample-tested by customers, with several products already in stable mass supply, and multiple products are rushing to secure orders. The completion and operation of the “Annual Production of 300 Tons KrF/ArF Photolithography Resin Industrialization Project” marks a significant breakthrough in the high-end semiconductor materials field. This achievement enables full-process自主可控 (independent and controllable) from key materials to photoresist products, allowing for more efficient response to customer needs, rapid and high-quality product delivery, and creating new growth points for the company.

(Edited by: Wang Zhiqiang HF013)

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