Open Acces Policy
This journal provides immediate open access to its content on the principle that making research freely available to the public supports a greater global exchange of knowledge.
This journal is an open-access journal, which means that all content is freely available without charge to users or / institutions (for online version only). Users or people can read, download, copy, distribute, print, search, or link to full-text articles in this journal without asking prior permission from the publisher or author. Hence, there is no subscription fee to access the online version of KUNKUN articles. However, people who want to get the KUNKUN hardcopy version from our office should buy it by following a certain process.