What are the major differences between counter purchase and buyb

What are the major differences between counter purchase and buyback?
【正确答案】：The major differenee between counter purchase and buylack is that in buyback the goods and senices taken back are tiel to the onnal goods exported whereas that is not the case in counter purchase. Another important difference is that a buyback deal usually stretches orer a longer period of time (as long as 15 to 20 years) than a counter purchase deal.