Many type of folding spread malaysia market which alot of it is self modified just to save costing.(try modified a kancil become BMW 5 series then u know what i mean)Aluminium brand name like Fujisash and LB are most practical all time and the most important is free maintenance.While installer with superb quality finishing is like Premium window, Le diament i saw before their job is like this ( but aint cheap) So choose wisely ask from your installer what kind of aluminium they using and what kind of roller,lockset,hinges and flush butt.Good luck
Price range 30 to 80 per sqft might get you modified thing while 100 to 180 per sqft will get you nice quality folding door.

This post has been edited by Becabal: Dec 22 2011, 05:34 PM