Segment Information (Details) (USD $)	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011
Revenues:
Revenues	$ 57,199,221	$ 55,579,262
Depreciation:
Depreciation	6,519,394	5,351,359
Interest expense:
Interest expense	305,659	193,709
Net income (loss):
Net income (loss)	4,198,580	5,760,543
Identifiable long-lived tangible assets by segment:
Identifiable long-lived tangible assets	66,554,655	64,042,079
Identifiable long-lived tangible assets by geographical location:
Identifiable long-lived tangible assets	59,436,100	64,042,079
Forged Rolled Rings and Related Components [Member]
Revenues:
Revenues	31,940,931	37,846,190
Depreciation:
Depreciation	5,077,390	4,416,579
Interest expense:
Interest expense	239,974	193,709
Net income (loss):
Net income (loss)	1,359,449	4,586,263
Identifiable long-lived tangible assets by segment:
Identifiable long-lived tangible assets	47,754,697	51,930,395
Dyeing and Finishing Equipment [Member]
Revenues:
Revenues	25,258,290	17,733,072
Depreciation:
Depreciation	1,442,004	934,780
Interest expense:
Interest expense	65,685
Net income (loss):
Net income (loss)	3,737,787	2,098,426
Identifiable long-lived tangible assets by segment:
Identifiable long-lived tangible assets	18,799,958	12,111,684
Other Segment [Member]
Interest expense:
Interest expense
Net income (loss):
Net income (loss)	(898,656)	(924,146)
China [Member]
Identifiable long-lived tangible assets by geographical location:
Identifiable long-lived tangible assets	66,554,655	64,042,079
United States [Member]
Identifiable long-lived tangible assets by geographical location:
Identifiable long-lived tangible assets