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INVENTORY | 12 Months Ended
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Dec. 31, 2017
Inventory Disclosure [Abstract] |
INVENTORY | INVENTORY Inventories in the Consolidated Balance Sheet is comprised of the following components:
| December 31,
| 2017 |  | 2016
Raw materials | $ | 97,577 |  |  | $ | 76,811 |
Work-in-process | 50,695 |  |  | 40,556 |
Finished goods | 200,395 |  |  | 138,039 |
Total | $ | 348,667 |  |  | $ | 255,406 |
The valuation of LIFO inventories is made at the end of each year based on inventory levels and costs at that time. Accordingly, interim LIFO calculations are based on management’s estimates of expected year-end inventory levels and costs. Actual year-end inventory levels and costs may differ from interim LIFO inventory valuations. At December 31, 2017 and 2016, approximately 32% and 40% of total inventories, respectively, were valued using the LIFO method. The excess of current cost over LIFO cost was $68,641 at December 31, 2017 and $61,329 at December 31, 2016.

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- Definition The entire disclosure for inventory. Includes, but is not limited to, the basis of stating inventory, the method of determining inventory cost, the classes of inventory, and the nature of the cost elements included in inventory. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.6) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6361739&loc=d3e7789-107766 + Details
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