Can't give you any set suppliers, although singapore is the link library around here, he may have some ideas for you.
As for the market, I guess the obvious question is have you have already identified it has a niche market?
If you haven't, then I would suggest concentrating on identifying your market first, then sourcing products that cater to it.
Quick word of advice, try not to talk about any niche market you are involved with in an open forum
Just remember that these types of forums always have a lot of people looking for a market that they can sell to, and if you do the research that confirms a niche market, then post as much on a forum, your niche market will evaporate over night as lots will tow truck your research and your niche will be saturated in absolutely no time at all!
Just learn to play your cards a little closer to your chest to protect your market :)