If they are a brand name made in China I suspect that they should be ok. Hopefully they would be made to use the specs and QC of the parent company. For example, the Fujitsu heat pumps we get out here are made in the PRC and there is nothing wrong with them. The Chinese designed and manufactured in PRC ones are a pile of s**t.
I must admit though, a few of the local lads had those Chinese knockoff mini bikes. They would quickly be in to see me to put SKF wheel bearings in as the (unbranded) originals were really rubbish, and to replace the exhaust studs as the original ones were made of cheese.