On one hand, the manufacturer will use different cheap brands bags in different markets for meeting different satisfaction, not allowing cross-regional chaos phenomenon. Manufacturer, on the other hand, there just isn't ready to go on sale in China for some products, so it will not allow amazon to break their business planning. 
Taking 
For an example, the Coach have a lot of COACH BAGS MOST SELLERS is China's mother is commonly known as the coach, in the UK is a coach (commonly known as the British kraal), in Italy is coach (cattle in Italy 
Bar), Spain is Almiron coach (Spain), polishing with brand is Bebilon stall (Poland), Finland is with brand Tutteli byre (Finland), in the Netherlands and China local 
Using all of these material and optimal can have a Chinese name. COACH NEW ARRIVALS has rowed well each region of the brand, it is absolutely not allowed amazon to sell British coach for China!