FN101 cartridge,market name is CCELL cartridge,all factories produce it,but materials,produce technolgy have big difference.
We only produce good quality ones,can promiss to customers the fail rate must be less than 0.5%.
In order to avoid chemical reactions betweent the center tube with oil,lead oil change color,we changed nickel material to chromium.
Also for this ccell cartridge bottom part,we never use glue to make it tightly,but all by hands-press work,to be more tightly and safer.
Can make different colors,accept print or engrave your logo on,welcome to contact us for more infos.