March 2011 sales for the Metal Treating Institute (MTI) reached $88.5 million, a gain of 21.6% over March 2010 sales, which totaled $72.8 million. Total sales for MTI for the first quarter of 2011 (January-March) were $238.8 million, an increase of 24.2% from the first quarter of 2010, when sales for January-March were $192.3 million. All nine MTI districts reported higher sales in March 2011 compared to March 2010. Michigan experienced the largest increase (up 31%).