DESCRIPTION OF BUSINESS (Tables)

6 Months Ended

Jun. 30, 2023

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Direct or Indirect Interests of Subsidiaries

The Company has direct or indirect interests in the following subsidiaries:

		Effective interest held as at
Name of subsidiaries	Place and date of incorporation	June 30, 2023		December 31, 2022
ACM Research (Shanghai), Inc.	PRC, May 2005	82.1	%	82.5	%
ACM Research (Wuxi), Inc.	PRC, July 2011	82.1	%	82.5	%
CleanChip Technologies Limited	Hong Kong, June 2017	82.1	%	82.5	%
ACM Research Korea CO., LTD.	Korea, December 2017	82.1	%	82.5	%
ACM Research (Lingang), Inc. (1)	PRC, March 2019	82.1	%	82.5	%
ACM Research (CA), Inc.	USA, April 2019	82.1	%	82.5	%
ACM Research (Cayman), Inc.	Cayman Islands, April 2019	100.0	%	100.0	%
ACM Research (Singapore) PTE. Ltd.	Singapore, August 2021	100.0	%	100.0	%
ACM Research (Beijing), Inc.	PRC, February 2022	82.1	%	82.5	%
Hanguk ACM CO., LTD.	Korea, March 2022	100.0	%	100.0	%
Yusheng Micro Semiconductor (Shanghai) Co., Ltd	PRC, June 2023	82.1	%	—	%
ACM-Wooil Microelectronics (Shanghai) Co., Ltd	PRC, June 2023	59.4	%	—	%
(1) ACM Research (Lingang) Inc., or ACM Lingang, is the English name referred to by its Chinese language name Shengwei Research (Shanghai), Inc. in prior filings. ACM Research (Lingang), Inc. and Shengwei Research (Shanghai), Inc. refer to the same entity.