EP.22: Treasures | Dr. Stone

EP22 ดร.สโตน เจ้าแห่งวิทยาศาสตร์กู้คืนอารยธรรมโลก Dr. Stone ดูการ์ตูนออนไลน์ | To prepare for war with Tsukasa's kingdom, Senku starts to manufacture the cell phone, meanwhile managing to build a power plant with water mills. Senku and the group continue their attempt to develop a cell phone, but fail time and time again because they cannot find materials that can withstand heat. Heating up stones still proves to be troublesome. Heat-resistent materials to be used for sim cards and vacuum tube have not yet been found after numerous trials.