I' am in contact with some of the main folding bike frame manufactories in China. Regarding the mentioned brands, FSIR, CRIUS, LITEPRO, FNHON...... if you guys have any question, I would like to help you to get more information.
Litepro and Fnhon looked to have the same design reference, but the pricing is a bit higher with Fnhon. Is there any significant differences in build quality or material between the two ?