ACM Research, Inc. supplies semiconductor manufacturers with machines used at several stages of integrated circuit production. Its traditional area of expertise is wafer cleaning: wafers are discs of semiconductor material on which chips are fabricated. This operation, repeated throughout manufacturing, directly contributes to defect control and production yield. The company is headquartered in Fremont, California, but a major share of its operations and customer base is in China.
An American company built around the Chinese market
Founded in 1998 by David Wang, ACM Research built its business on wet surface processing technologies. It gradually developed its research, manufacturing and sales capabilities in China, notably through its subsidiary ACM Research (Shanghai). This presence enables it to support investment by local chip producers and work close to their factories.
The company has been listed on Nasdaq since 2017 under the ticker symbol ACMR. Its Shanghai subsidiary has also been listed on the Shanghai Stock Exchange’s STAR Market since 2021. This structure combines an American parent company with a substantial Chinese operating base, a key feature in understanding both its growth and its geopolitical exposure.
Equipment for cleaning, deposition and processing
ACM Research’s machines are used, among other things, to remove particles, residues and contaminants from wafer surfaces. As chip structures become finer and more complex, these treatments must balance effectiveness with the preservation of particularly fragile patterns. The company notably uses megasonic technologies, based on high-frequency acoustic waves, as well as various chemical processes.
Beyond cleaning, its portfolio includes electrochemical deposition equipment, used notably to deposit copper in interconnects and certain advanced packaging applications. ACM Research is also expanding its offering to thermal and deposition processes. Its customers include foundries and memory manufacturers. In this business, selling a machine requires a demanding technical qualification process: performance must be validated under the customer’s production conditions before any potential wider deployment.
What comes next?
Diversifying its equipment and expanding its customer base outside China are two important priorities for the future. Three-dimensional architectures and advanced packaging are increasing surface processing requirements, but every new process must demonstrate its reliability in industrial production.
At the same time, ACM Research must navigate US restrictions on technologies destined for China and evolving industrial self-sufficiency policies. Its trajectory will therefore depend as much on the adoption of its machines as on its ability to secure supplies and develop a more diversified commercial presence. Website: acmr.com.