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Inventories (Tables)
6 Months Ended
Jun. 30, 2019
Inventories  
Schedule of inventories

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June 30,

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December 31,

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2019

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2018

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Finished goods

  

$

49,088

  

$

43,192

Work-in-process

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8,515

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7,357

Raw material and supplies

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36,313

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31,447

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$

93,916

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$

81,996