Segment Information (Tables)

12 Months Ended

Dec. 31, 2021

Segment Reporting [Abstract]

Schedule of long-lived assets, classified by major geographic regions

	December 31,					December 31,
Geographic regions	2020					2021
	Amount		%			Amount		%
PRC		198,921		94	%		211,139		79	%
Asia & Pacific		198,921		94	%		211,139		79	%
Germany		12,747		6	%		21,966		8	%
United Kingdom		120		0	%		67		0	%
Europe		12,867		6	%		22,033		8	%
United States		230		0	%		33,893		13	%
Total		212,018		100	%		267,065		100	%

Schedule of assets and revenues major geographic regions

	Year ended December 31,					Year ended December 31,					Year ended December 31,
Geographic regions	2019					2020					2021
	Amount		%			Amount		%			Amount		%
PRC		49,346		64	%		66,160		62	%		93,326		61	%
India		4,988		7	%		8,570		8	%		17,805		12	%
Russia		3,673		5	%		5,671		5	%		12,213		8	%
Other countries		7,430		10	%		2,254		2	%		8,172		5	%
Asia & Pacific		65,437		86	%		82,655		77	%		131,516		86	%
United Kingdom		668		1	%		11,544		11	%		11,386		7	%
Other countries		10,011		13	%		12,770		12	%		8,156		6	%
Europe		10,679		14	%		24,314		23	%		19,542		13	%
Other		318		0	%		549		0	%		918		1	%
Total		76,434		100	%		107,518		100	%		151,976		100	%