WHAT IS THE QUALITY OF INK USED IN YOUR REFILLS? SUBMARINE HAS A WIDE VARIETY OF REFILLS LIKE ROLLER REFILLS, JOTTER REFILLS, CROSS REFILLS, MINI REFILLS, ETC EACH HAVING A PECULIARITY OF ITS OWN. THE INK AND GREASE USED IN OUR JOTTER REFILLS IS IMPORTED FROM DOCUMENTAL COMPANY OF GERMANY.   WHAT TYPE OF TIP DO YOU USE FOR YOUR PENS? SUBMARINE HAS A WIDE VARIETY OF REFILLS LIKE ROLLER REFILLS, JOTTER REFILLS, CROSS REFILLS, MINI REFILLS, ETC EACH HAVING A PECULIARITY OF ITS OWN. THE INK AND GREASE USED IN OUR JOTTER REFILLS IS IMPORTED FROM DOCUMENTAL COMPANY OF GERMANY.   WHAT TYPE OF TIP DO YOU USE FOR YOUR PENS? SUBMARINE HAS A WIDE VARIETY OF REFILLS LIKE ROLLER REFILLS, JOTTER REFILLS, CROSS REFILLS, MINI REFILLS, ETC EACH HAVING A PECULIARITY OF ITS OWN. THE INK AND GREASE USED IN OUR JOTTER REFILLS IS IMPORTED FROM DOCUMENTAL COMPANY OF GERMANY. Next