I'm sure they would be happy to come up with capital and participate in processing of their own goods. And when making choice between german and russian investitions one should remember that german businessmen do not blow up the cars with their competitors and do not sign their contracts with machine guns . At this point we have only few links related to this topics. Several major belarusian enterprises are manufacturing polymers, synthetic fibers, polymer film etc. Rudensk plastic manufacturing plant near Miensk.
Some plants rely on nitrogen extracted from air and other.
It is now a part Belarusich Consorcium which includes also Khimvolokno, Polymir etc. It turns out that our pharmaceutical industry is not so bad. I've heard that some brits are buying our antibiotics in packs when in Belarus. Keep in mind that extremely strict former USSR governmental standards on medicine are still operating. Of course with the disintegration of the industrial network of FSU the production has fallen and there is a deficit of medicine now in Belarus.