You can refill to Epson 4 color printer refillable cartridge or CISS.Printing the picture on inkjet paper or heat transfer paper. then heat transfer to T-shirts mugs, tiles, etc.
The ND Logo and the US patent numbers: 7,328,986 & 7,192,109 are on the package. The transparant bottles are easy to view if the ink is pigmented sublimation or not. The former Colorink and now the Dinsink is a solo distributor of ND inkjet products in USA. We are not responsible for all other sellers sold under this category. Pay attention on whether you have got genuine ND product. If you got fake one, please report it to Amazon to protect your right. Thanks.