Ink cup for pad printer (inner dia:Ø42mm) : ink cup,ceramic ring,Tungsten steel ring,pad printer,etching system,precise displacement workbench,Silicone Pad and mould,Airpods Silicone Case,Heat transfer silicone wheel, silicone plate, ink cup,ceramic ring,Tungsten steel ring,pad printer,etching system,precise displacement workbench,Silicone Pad and mould,Airpods Silicone Case,Heat transfer silicone wheel, silicone plate