... imported PP material, ultrasonic wave welding.anti-corrosioncan hold solvent inks etc 2 Environmentally friendly: Go through HSF test, safe and ... cartridges,could be used repeatedly,And have specialpigment or dye inks,save printing cost a lot then to use original ink ... is refilling ink,after theink is used up,just refill inks,after installing the cartridge,fluent printing forever. 5 Stability: ...