December 29, 2020 Ink Test of Nano Derma pen The dia. of the nano needle is 0.8nm(0.00008mm), it can make holes on the balloon, the ink permeated the balloon, but without breaking it. In same category December 29, 2020 Ink Test of Nano Derma pen December 29, 2020 The NDP Nano Derma Pen was shortlisted by COSMOPROF Asia Trends Related by tags Leave a comment Your email address will not be published. Required fields are marked * Name Email Message Please note, comments must be approved before they are published Back to Blog