DESCRIPTION OF BUSINESS (Tables)

9 Months Ended

Sep. 30, 2020

DESCRIPTION OF BUSINESS [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	September 30, 2020			December 31, 2019
ACM Research (Shanghai), Inc.	China, May 2005		91.7	%		91.7	%
ACM Research (Wuxi), Inc.	China, July 2011		91.7	%		91.7	%
CleanChip Technologies Limited	Hong Kong, June 2017		91.7	%		91.7	%
ACM Research Korea CO., LTD.	Korea, December 2017		91.7	%		91.7	%
Shengwei Research (Shanghai), Inc.	China, March 2019		91.7	%		91.7	%
ACM Research (CA), Inc.	USA, June 2019		91.7	%		91.7	%
ACM Research (Cayman), Inc.	Cayman Islands, April 2019		100.0	%		100.0	%