Greeting all. I just uploaded another informal review (as I'm not currently importing Chinese pens for my website). So informal, in fact, that it wasn't until publishing that I realized that I hadn't mentioned the filling system! These are cartridge/converter pens, unlike the piston fill Hong Dian Gray Rabbit pen I profiled last time. There are three versions: Steel Flighter; Brass; Cargon Fiber over brass.
Regards,
Norman