if i buy a technology will it increase the value of my assets? so for example if i buy technology for 10 million for my factory will the value of this factory increase by 10 million?
Not necessarily. Assets will increase, but virtonomics got it's own values set, which don't have to be the same as the marketprice. So, when you buy a product (for retail, as raw ingredient, machinery, technology, etc.), virtonomics decides what the worth of this product is, independant of what you actually paid for it.
It's possible that your assets drop even if you sell with profit. On my lien account I don't pay much attention to what's going on (which is not much, anyways). Once, when I checked after ten days I almost was bankrupt, because I accidently bought way to many hairdryers. My assets were sky high, but when I quit buying them and starting to sell them, my assets dropped again, even though I saved myself from bankruptcy!
In general, tech is way overpriced, or virto underprices them. Your assets probably won't grow with 10 mil, if you buy tech for 10 mil. But there might be an exception.