6. Chinese business practices and prices of their products. Chinese want to charge "high western prices" on products with no historical performance pedigree that are severly downgraded products made using much lower paid Chinese salaries compared to the western salaries and associated manufacturing costs(ie massive chinese profiteering), or refusal to sell the latest of what they have in service. Also, the arrogant culture of - "no - that is good enough for you, now give us your money for our overpriced product and be grateful you are getting it and don't ask such silly questions about other products approach.... " compared with western suppliers who will sell you the same version that is current in their armed forces eg Rafale, EF2000, etc ..
ps - The only one with real restrictions is the USA - everyone else will pretty much sell you the full version of anything they have and without restrictions or comprimises.