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Segmented information (Tables)
 12 Months Ended
Dec. 31, 2017
Operating Segments [Abstract]  
Revenue attributed to geographic regions
During the years ended December 31, 2017 and 2016, revenues attributed to geographic regions, based on the location of customers, were as follows:
 
Revenue
China

Europe

United States

South Korea

South America

Canada

Other Asia

 
TOTAL

2017
$
801,838

$
608,668

$
570,482

$
347,896

$
279,270

$
167,436

$
285,052

 
$
3,060,642

2016
$
518,499

$
403,879

$
359,476

$
257,658

$
179,287

$
109,706

$
169,924

 
$
1,998,429

As at December 31, 2017 and 2016, the net book value of property, plant and equipment by country was as follows:
 
Property, plant and equipment
United
States

Egypt

New
Zealand

Trinidad

Canada

Chile

Other

 
TOTAL

2017
$
1,412,394

$
720,397

$
265,153

$
155,525

$
148,420

$
107,495

$
188,942

 
$
2,998,326

2016
$
1,468,283

$
742,446

$
261,482

$
176,256

$
154,982

$
108,065

$
205,955

 
$
3,117,469