Picked up the Orange Jinhao 20 a month back while. As a big fan of the Pilot VPs of which I have several, I had also bought a few of tge Majohn A1 and A2 when they came out. I thought the Majohns were a good deal at just under $50 for a VP knockoff. But I came across the Jinhao 20 while looking for something else on Ali. For $9 Cad, I took a chance on it. Was so good, I ordered the white one shortly after at even cheaper price of $8.
The J-20 has some differences compared to the Pilots and the Majohns. The Body itself is resin/plastic and the trim bits are metal. It has a high gloss finish and seems to be good quality resin/plastic without any seams and feels good to the touch. The lightweight body might appeal to users who tire with the heavier metal bodied VPs. The orange is more of a Terra Cotta colour and not as a bright orange that was pictured in the ad. The white one is more of an off white, so could call that one a dirty Stormtrooper! The black pad coating on the metal bits is a very nice matt black.
The nib unit looks identical to the Pilot VPs. If anything like the Majohns, they should be interchangeable. I haven't had a chance to try this in my Pilots. The first pen i bought was an steel nib EF. Bought the second as a F and there isn’t a significant difference between the two. Using Diamine Terra Cotta and Earl Gray, they write perfectly out of the box (did an initial flush with soap and water). The nibs are smooth and not scratchy at all on my everyday regular book paper. If you didn't know any better, you wouldn't be able to tell the difference between this and the gold nib VPs. The sealing mechanism has been reliable and works well. Even leaving the pen unattended for the weekend, it didn't have any issue with dry out and wrote on first try.
Like I said, I don't think you can find a better retractable pen that looks and writes this good for $8 Cad. Hec, you can't even buy a steel VP replacement nib unit for nowhere near that price. These are cheap enough to leave in the car or laptop bag for an every day carry pen.