Note 3 - Property, Plant and Equipment - Capitalized Cost Less Accumulated Depreciation (Details) - USD ($)	Jun. 30, 2017	Dec. 31, 2016
Property, plant and equipment, gross	$ 4,468,432	$ 4,308,008
Less: accumulated depreciation	(3,149,763)	(2,994,757)
Property, plant and equipment, net	1,318,669	1,313,251
Building [Member]
Property, plant and equipment, gross	569,420	569,420
Construction in Progress [Member]
Property, plant and equipment, gross	972,985	972,985
Machinery and Equipment [Member]
Property, plant and equipment, gross	2,625,318	2,464,894
Computer Equipment [Member]
Property, plant and equipment, gross	116,071	116,071
Office Equipment [Member]
Property, plant and equipment, gross	20,739	20,739
Vehicles [Member]
Property, plant and equipment, gross	$ 163,899	$ 163,899

Amount of accumulated depreciation, depletion and amortization for physical assets used in the normal conduct of business to produce goods and services.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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-SubTopic 10
-Section 50
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-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.14)
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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Amount before accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
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-Name Accounting Standards Codification
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-SubTopic 10
-Section 50
-Paragraph 1
-Subparagraph (b)
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Amount after accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business to produce goods and services and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(13))
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