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Segment Reporting and Geographic Information (Tables) | 12 Months Ended
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Dec. 31, 2018
Segment Reporting and Geographic Information |
Schedule of sales by end-market |
|  | For the year ended December 31,
|  | 2018 |  | 2017 |  | 2016
|  | (in thousands)
Sales by end-market |  |  |  |  |  |  |  |  |
Advanced Packaging, MEMS & RF Filters |  | $ | 90,775 |  | $ | 67,406 |  | $ | 67,484
LED Lighting, Display & Compound Semiconductor |  |  | 249,974 |  |  | 248,615 |  |  | 145,701
Front-End Semiconductor |  |  | 62,582 |  |  | 40,319 |  |  | 8,427
Scientific & Industrial |  |  | 138,751 |  |  | 119,346 |  |  | 110,090
Total |  | $ | 542,082 |  | $ | 475,686 |  | $ | 331,702
Schedule of sales by geographic region |
|  | Net Sales to Unaffiliated Customers |  | Long-lived Tangible Assets
|  | 2018 |  | 2017 |  | 2016 |  | 2018 |  | 2017 |  | 2016
|  | (in thousands)
United States |  | $ | 125,659 |  | $ | 93,433 |  | $ | 85,582 |  | $ | 78,503 |  | $ | 81,046 |  | $ | 60,012
China |  |  | 194,032 |  |  | 106,674 |  |  | 84,604 |  |  | 81 |  |  | 64 |  |  | 219
EMEA(1) |  |  | 89,102 |  |  | 72,979 |  |  | 84,181 |  |  | 205 |  |  | 231 |  |  | 93
Rest of World |  |  | 133,289 |  |  | 202,600 |  |  | 77,335 |  |  | 1,495 |  |  | 3,717 |  |  | 322
Total |  | $ | 542,082 |  | $ | 475,686 |  | $ | 331,702 |  | $ | 80,284 |  | $ | 85,058 |  | $ | 60,646
| (1) |  | EMEA consists of Europe, the Middle East, and Africa

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