Quarterly report pursuant to Section 13 or 15(d)

6. INVENTORIES (Details)

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6. INVENTORIES (Details) - USD ($)
Mar. 31, 2018
Dec. 31, 2017
Inventories Details    
Raw materials $ 8,962,207 $ 10,395,433
Work-in-progress 1,265,586 1,265,339
Finished goods 2,211,009 967,409
Total inventories $ 12,438,802 $ 12,628,181