OPK Oboronprom 's a Russian aerospace holding company. The company's involved in helicopter production, engine production, air-defenсe systems, complex radio-electronic systems and leasing. Russian Helicopters, Oboronprom’s helicopter manufacturing group's the leading Russian designer and manufacturer of rotary-wing aircraft equipment. The capital structure of the company's as follows: 51.01% Russian Federation. 31.13% Rosoboronexport. 15.07% Republic of Tatarstan. 2.79% Rostver… (More on Oboronprom)