Living in Beijing, I'm so bored of cybermarts. Also, if you want to find the makers here, try wangjing and CAFA (central academy of fine arts) rather than Zhongguancun (where all the e-markets and grand tech universities are). It should not be surprising that the designers and artists would be more passionate about this than the engineer/entrepreneurs/traders trying to make some bucks.
Also, never leave your computer with the solder guy; always insist on watching the repair. They have swapped out good components for broken ones before.
NEVER trust those people at the cybermarts...buy from the Apple store, a certified Taobao store, or at a real storefront (though you still have to be careful). They will cheat you if they have any opportunity to do so.
Even if I'd missed the naan in Japan, my experience with Japanese Mexican food alone would have left me somewhat skeptical of your claim. b^)
I'm not really a big fan of central Asian naan (too hard, not fluffy), but we have a local variation of that here from Xinjiang.
O_o
(I hope I'm not mixing them up.)
But in Singapore, the mother lode is probably Koba Electronics[1] in Chinatown..
[1] http://dangerousprototypes.com/2012/08/06/global-geek-tour-s...
Around the Sim Lims (and across the island) you also have lots of small hardware shops.