Printed Four Key-Device Units for Unified Platform of Wireless Anti-Counterfeiting Label to Bridge in Blockchain[J] ADVANCED MATERIALS TECHNOLOGIES Sun, Junfeng Parajuli, Sajjan Shrestha, Kiran Park, Jinhwa Shrestha, Sagar Jung, Younsu Park, Hyejin Koirala, Gyan Raj Nasir, Nadra Kim, Seongryeong Truong, Han Jang, Haesook Lee, Jinkwan Lee, Jongchan Cho, Gyoujin