• Certificate of Design Registration
  (ballpoint pen)
• Certificate of Design Registration
  (mechanical pencil)
• Certificate of Design Registration
  (mechanical pencil)
• Certificate of Utility Model Registration (multifunctional ruler)
• Certificate of Utility Model Registration (finger pen)
• Certificate of Utility Model Registration (negative ion accessory)
• Certificate of Utility Model Registration (optical lens cleaner for accessories)
• Letters Patent (multifunctional crayons and its production method)
• Certificate of Design Registration
  (ballpoint pen)
• Certificate of Design Registration
  (pencil)
• Certificate of Design Registration
  (colored note paper)
• Certificate of Design Registration
  (pocket notebook)
• Certificate of Design Registration
  (pocket notebook)
• Certificate of Design Registration
  (pocket notebook)
• Certificate of Design Registration
  (pencil cap)
• Certificate of Design Registration
  (colored paper pencils)
• Letters Patent
  (production method for environmentally friendly recycled paper pencils)