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PROPERTY, PLANT AND EQUIPMENT, NET | 12 Months Ended
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Dec. 31, 2018
Property, Plant and Equipment, Net [Abstract] |
PROPERTY, PLANT AND EQUIPMENT, NET | 7. PROPERTY, PLANT AND EQUIPMENT, NET Property, plant and equipment, net, consist of the following:
|  | December 31, |
|  | 2017 |  |  | 2018 |
Cost |  |  |  |  |  |
Buildings and plant |  | $ | 313,210,971 |  |  | $ | 322,914,381 |
Machinery and equipment |  |  | 237,606,822 |  |  |  | 335,808,916 |
Furniture, fixtures and equipment |  |  | 23,035,493 |  |  |  | 25,953,939 |
Motor vehicles |  |  | 254,630 |  |  |  | 582,375 |
Less: Accumulated depreciation |  |  | (109,191,519 | ) |  |  | (131,106,712 | )
Property, plant and equipment, net |  | $ | 464,916,397 |  |  | $ | 554,152,899 |
Construction in process |  |  | 20,550,020 |  |  |  | 57,463,560 |
Total |  | $ | 485,466,417 |  |  | $ | 611,616,459 |
Depreciation expense was $22,620,885, $27,576,077 and $27,487,163 for the years ended December 31, 2016, 2017 and 2018, respectively. Construction in process of $57.5 million as of December 31, 2018 was mostly related to the Phase 4A expansion project.

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- Definition The entire disclosure for long-lived, physical assets used in the normal conduct of business and not intended for resale. Includes, but is not limited to, accounting policies and methodology, roll forwards, depreciation, depletion and amortization expense, including composite depreciation, accumulated depreciation, depletion and amortization expense, useful lives and method used, income statement disclosures, assets held for sale and public utility disclosures. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -URI http://asc.fasb.org/topic&trid=2155823 + Details
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- References No definition available. + Details
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