Originally Posted by Jipe

Just a remark: these 20" trifold aren't Brompton G-line copies, they are only 16" Brompton copies enlarged to fit 20" wheels with many weak points of the 16" Brompton including 35mm max tire width (instead of 55mm for the G-line) and are nevertheless bigger folded than the G-line.
They were already on the market long before the G-line was even announced.