https://dahon.com/bikes/curl-i4/

Curl i4 with a 3 speed hub?! I thought the i stood for the number of internal gears same as D7 and D8 for derailleurs etc. Some inconsistencies on that page. Does mention 4 gears further down. I think for the small gain of a fourth gear I'd prefer the greater reliability of the 3 speed hub. Maybe I'm wrong but I seem to remember the 4 speed version was noticeably less reliable than the 3 speed and internally much more complicated and shared more of its design with 5-7 speed hubs. Considering they have the i8 version for those who need wider gear ratios my preference would be a i3 version anyway in the range for those lighter and more fit that just want more reliability for maybe an everyday commuter bike.

Quite a lot of model variations between different regions.

********************??-DAHON********************????

Although some of the Dahon chinese bikes look to be rebranded fuji-ta or flying pigeon bikes (2 very large chinese manufacturers). There seems to be many European and US brands that basically resell Chinese bikes with their brand with a huge price increase to the Chinese. I guess the fear of Chinese brand quality being a lottery might mean people are happy to pay more with the assurances of it being better tested. Although many such bikes look poor. Generally looks like spending more for no gain.