I thought they were very well known outside of China. We even have forums on AF for the ZTE Blade, Engage, Flash, etc. Same with the Huawei Ascend, etc. ZTE and Huawei(both Chinese) have a huge international telecoms presence, with phones, 3G modems, plant, switching, transmission, etc. In fact apparently the US Govt. isn't too happy about it.
Isn't multi-windowing something that's only happened with 4.1 and 4.2? - a feature of the Android OS? I don't think Huawei and ZTE are pricing their phones aggressively outside of China, AFAICT they can just as expensive their Taiwanese and Korean counterparts in the UK.
Lenovo doesn't do much with cell-phones outside of Asia, but everyone knows their PCs and laptops of course(they bought IBM's PC division). Lenovo does offer a cloud storage service for their Android phones, similar to Samsung Dive.
We used to laugh at Japanese cars...we don't now.
We used to laugh at Korean cars...we don't now.
We laugh at Chinese cars.....
Same thing goes for tech.