INVENTORIES

The major components of inventory were as follows:



(amounts in millions)	December 31, 2015		December 31, 2014
Finished goods	$	340.1	$	156.0
Work in process	28.5		0.5
Raw materials and supplies	148.9		49.3
Total inventory, net	$	517.5	$	205.8

In connection with Platform's various acquisitions, the value of finished goods inventory was increased at the respective dates of acquisition to reflect fair value. For the years ended December 31, 2015 and 2014, $76.5 million and $35.5 million, respectively, was charged to "Cost of sales" in the Consolidated Statements of Operations based on the estimated inventory turnover of the various acquisitions. For the Successor 2013 Period, $23.9 million was charged to "Cost of sales."

As of December 31, 2015 and 2014, the remaining portion of the finished goods inventory fair value mark-up totaled $11.5 million and $22.0 million, respectively.