Are those Windows 7 from China?
I recall when I visited China last year, I saw their own low-cost MS Office (much like the low-cost MS Office we have here locally -- our local low-cost MS Office have to be activated (first activation) in the Philippines only). The China low-cost MS Office have to be first-activated in China too. (by my exchange rate calculation, parang mas mura pa rin yung licensed low-cost MS Office natin dito compared to China -- although I only chanced upon one shop with the China low-cost licensed MS Office, so it may not be accurate).