During my nearly 30-year career with the U.S. Department of Commerce, U.S. Commercial Service, both as an International Trade Specialist and as the director of a U.S. Export Assistance Center, I spoke many times with exporters who told me that their buyer in China owed them money and their multiple attempts to reach them were unsuccessful. I always asked the exporter if they had conducted due diligence on the buyer and, invariably, the answer was no. The exporter never stood a chance.
Had the exporter conducted due diligence, the company might have concluded that the buyer was not legitimate, which would have prevented the problem in the first place. (To be fair, this can happen anywhere; however, in my experience, China was the preeminent player). Due diligence is not a guarantee, but it can certainly mitigate risks.