Segment Information (Details) (USD $)	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012	Dec. 31, 2012
Revenues:
Revenues	$ 13,884,699	$ 9,409,229
Depreciation:
Depreciation	1,569,551	1,547,345
Interest expense:
Interest expense	105,127	90,033
Net income (loss):
Net income (loss)	1,622,600	302,795
Identifiable long-lived tangible assets by segment:
Identifiable long-lived tangible assets	60,923,316		59,436,100
Identifiable long-lived tangible assets by geographical location:
Identifiable long-lived tangible assets	60,923,316		59,436,100
Forged Rolled Rings and Related Components [Member]
Revenues:
Revenues	6,526,701	5,585,455
Depreciation:
Depreciation	1,046,577	1,217,169
Interest expense:
Interest expense	47,152	77,633
Net income (loss):
Net income (loss)	796,566	326,669
Identifiable long-lived tangible assets by segment:
Identifiable long-lived tangible assets	39,812,045		40,636,142
Dyeing and Finishing Equipment [Member]
Revenues:
Revenues	7,357,998	3,823,774
Depreciation:
Depreciation	522,974	330,176
Interest expense:
Interest expense	57,975	12,400
Net income (loss):
Net income (loss)	961,159	409,343
Identifiable long-lived tangible assets by segment:
Identifiable long-lived tangible assets	21,111,271		18,799,958
Other Segment [Member]
Interest expense:
Interest expense
Net income (loss):
Net income (loss)	(135,125)	(433,217)
China [Member]
Identifiable long-lived tangible assets by geographical location:
Identifiable long-lived tangible assets	60,923,316		59,436,100
United States [Member]
Identifiable long-lived tangible assets by segment:
Identifiable long-lived tangible assets
Identifiable long-lived tangible assets by geographical location:
Identifiable long-lived tangible assets