Condensed Consolidated Statements of Income and Comprehensive Income In Thousands, except Share data	3 Months Ended			6 Months Ended
	Jun. 30, 2011 USD ($)	Jun. 30, 2011 CNY	Jun. 30, 2010 CNY	Jun. 30, 2011 USD ($)	Jun. 30, 2011 CNY	Jun. 30, 2010 CNY
Net Revenue
Product sales	$ 134,584	869,881	608,485	$ 240,372	1,553,643	1,155,331
Service revenue			8,496			14,449
Revenues, Total	134,584	869,881	616,981	240,372	1,553,643	1,169,780
Cost of sales
Cost of goods sold	(118,028)	(762,873)	(522,818)	(208,787)	(1,349,497)	(992,766)
Cost of service			(6,882)			(11,655)
Cost of Revenue	(118,028)	(762,873)	(529,700)	(208,787)	(1,349,497)	(1,004,421)
Gross profit	16,556	107,008	87,281	31,585	204,146	165,359
Selling, general and administrative expenses	(7,532)	(48,682)	(39,796)	(14,081)	(91,013)	(77,356)
Research and development expenses	(3,772)	(24,381)	(18,991)	(7,136)	(46,126)	(35,022)
Other operating income (expense)	1	4	9	(1)	(6)	36
Income from operations	5,253	33,949	28,503	10,367	67,001	53,017
Interest expense	(582)	(3,759)	(1,666)	(1,062)	(6,862)	(2,781)
Interest income	555	3,589	3,493	1,039	6,719	6,787
Earnings before income taxes	5,226	33,779	30,330	10,344	66,858	57,023
Income tax expense	(548)	(3,540)	(3,040)	(1,101)	(7,113)	(5,699)
Net income	4,678	30,239	27,290	9,243	59,745	51,324
Less net income attributable to noncontrolling interests	(508)	(3,284)	(132)	(887)	(5,734)	(405)
Net income attributable to Cogo Group, Inc.	4,170	26,955	27,158	8,356	54,011	50,919
Earnings per share attributable to Cogo Group, Inc.
Basic	$ 0.11	0.71	0.73	$ 0.22	1.42	1.37
Diluted	$ 0.11	0.70	0.71	$ 0.21	1.39	1.34
Weighted average number of common shares outstanding
Basic	38,078,756	38,078,756	37,133,304	38,036,997	38,036,997	37,088,817
Diluted	38,719,290	38,719,290	38,045,705	38,958,170	38,958,170	38,070,100
Comprehensive income:
Net income	4,678	30,239	27,290	9,243	59,745	51,324
Other comprehensive income
Foreign currency translation adjustments	(378)	(2,442)	(2,235)	(545)	(3,520)	(2,096)
Comprehensive income
Less:comprehensive income attributable to noncontrolling interests	(503)	(3,254)	(46)	(874)	(5,648)	(264)
Comprehensive income attributable to Cogo Group, Inc.	$ 3,797	24,543	25,009	$ 7,824	50,577	48,964