Metal Powder Products, a manufacturer of aluminum and ferrous powder-metal components, has been acquired by Millstein & Co., a diversified investment management and financial services firm. Metal Powder Products of Westfield, Ind., experienced a record year in 2015 and has continued its recent success by consistently innovating and expanding production capacity. Millstein plans to invest in automation, material flow and capacity at Metal Powder Products’ three factories in Pennsylvania. The firm sees great future potential driven by Metal Powder Products’ market-leading aluminum capabilities.