MACAO--(BUSINESS WIRE)--Deswell Industries, Inc. (Nasdaq:DSWL) today announced its financial results for the fiscal fourth quarter ended March 31, 2015. Net sales for the fourth quarter ended March 31, 2015 were $8.1 million, an increase of 2.3% compared to net sales of $7.9 million for the same quarter ended March 31, 2014. Net sales increased by 29.6% to $4.5 million in the Company’s plastic segment and decreased by 19.3% to $3.6 million in the electronic and metallic segment. The operating l