After living in China for a while it struck me that they don't have 1-2y guarantee on anything really. Buying a new car you get like 3y.
What you basically get is a functional guarantee which means the stuff has to work and that sort of stuff is taken care of pretty soon after the sale. Maybe you can get away with 3 months at the most depending on the item.
It doesn't mean everything is designed to fail after 3 months. Just means domestic sales are not really focused that much on longevity as western sales. As long as it works well at the point of sale it's fine. (Customer cares already at point of sale how to better care for an item to increase longevity).
This is how it's always been in China, not because they are evil or trying to get you. A customer complaining to a chinese company after 1y about a speck somewhere is probably seemed as a nuisanse.
Obviously when dealing with western customers a higher level of quality is desired. Companies pop up all the time and it might take a while until their products have passed the test of time.
My point is. If you buy from a chinese company that has been selling for some time to western customers they probably have a higher level of quality that might even surprise you. I'd say some bestsellers of a chinese company could quite easily surpass some of the lesser sold or cutting edge models of famous brands.
As a customer it's wise to dive into quality inspection a bit, not blindly trust whatever brand is stamped on the item. Reviews are good, while keeping statistics in mind. Some customers cry louder than others. Some don't cry which I'm sure happens a lot when dealing with LBS.
I've bought some stuff that many westener friends would call a gamble with life. I've never had it explode in my face. The bigger the risk the more I inquire about it and try to make a risk assessment. When I get something risky I try it out and give it a gentle ride first. I ask the seller technical questions and if I am satisfied with the technical expertise and issue awareness I choose to proceed or not.
I've gotten carbon clincher rims, ultralight skewers, full ceramic bearings. I've bought hongfu frames second hand, carbon handlebars, cheap titanium bolts, home made DIY integrated seat+seatpost. Only the bearings proved to have been a bad purchase so far. I was aware of the risk at the time of purchase and I still decided to try it. No surprises.
When I hear my chinese riding buddies talking about what bike to buy (most of the time nothing mentioned is of a chinese brand), I tell them while chuckling that in the west many people are just as excited about getting that new chinese frame and wheels.
Ironic isn't it...