Segment Information (Details) (USD $)	12 Months Ended
	Dec. 31, 2013		Dec. 31, 2012
Revenues:
Revenues	$ 72,112,662		$ 57,199,221
Depreciation:
Depreciation	6,704,386		6,519,394
Interest expense:
Interest expense	300,381		305,659
Net income (loss):
Net income (loss)	8,185,577		4,198,580
Identifiable long-lived tangible assets by segment:
Identifiable long-lived tangible assets	75,346,344		66,554,655
Identifiable long-lived tangible assets by geographical location:
Identifiable long-lived tangible assets	75,346,344		66,554,655
Forged Rolled Rings and Related Components [Member]
Revenues:
Revenues	33,775,849		31,940,931
Depreciation:
Depreciation	4,355,417		5,077,390
Interest expense:
Interest expense	141,324		239,974
Net income (loss):
Net income (loss)	3,244,455		1,359,449
Identifiable long-lived tangible assets by segment:
Identifiable long-lived tangible assets	43,987,670		40,636,142
Dyeing and Finishing Equipment [Member]
Revenues:
Revenues	38,336,813		25,258,290
Depreciation:
Depreciation	2,348,969		1,442,004
Interest expense:
Interest expense	159,057		65,685
Net income (loss):
Net income (loss)	5,747,096		3,737,787
Identifiable long-lived tangible assets by segment:
Identifiable long-lived tangible assets	26,607,468		18,799,958
Other Segment [Member]
Net income (loss):
Net income (loss)	(805,974)	[1]	(898,656)	[1]
Identifiable long-lived tangible assets by segment:
Identifiable long-lived tangible assets	4,751,206	[2]	7,118,555	[2]
China [Member]
Identifiable long-lived tangible assets by geographical location:
Identifiable long-lived tangible assets	75,346,344		66,554,655
United States [Member]
Identifiable long-lived tangible assets by geographical location:
Identifiable long-lived tangible assets

[1] The Company does not allocate any general and administrative expenses of its U.S. activities to its reportable segments, because these activities are managed at a corporate level.

[2] The Company does not allocate the equipment held for operating lease to any operating segment.