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1. NATURE OF BUSINESS AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Tables)

12 Months Ended

Dec. 31, 2016

Accounting Policies [Abstract]

Schedule of property plant and equipment useful life

	Useful life (in years)
Buildings (including salt pans)	8 - 20
Plant and machinery (including protective shells, transmission channels and ducts)	3 - 8
Motor vehicles	5
Furniture, fixtures and equipment	3 - 8

Schedule of computation of basic and diluted earnings per share

		Years ended December 31,
		2016				2015
Numerator
Net income		$	36,225,831			$	34,068,037
Denominator
Basic: Weighted-average common shares outstanding during the year			46,279,033				45,167,288
Add: Dilutive effect of stock options			346,630				942,116
Diluted			46,625,663				46,109,404
Earnings per share
Basic		$	0.78			$	0.75
Diluted		$	0.78			$	0.74

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Tabular disclosure of an entity's basic and diluted earnings per share calculations, including a reconciliation of numerators and denominators of the basic and diluted per-share computations for income from continuing operations.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 260
-SubTopic 10
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257

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