Complex sentence: After sales, exchange or refund in faulty product can be handy as well, it is always easier to communicate with local business rather than international cooperations, there is also quicker reaction to emergency or faster decision making to uncertainty in the market.
Split into simpler sentences: After sales, exchange or refunds of faulty products will benefit as well; as it is always easier to communicate with local business rather than international cooperations. Further, there is also quicker reaction to emergency situations or faster decision making to uncertainties in the market.