As usual, we had Rinkoh (輪講) on Friday afternoon. This week (8 November 2019), we have a special guest Prof. Sawae from Kyushu University Japan joining our Rinkoh. Since Prof Sawae expert in Biotribology, Hidayah presented her research work and received a valuable comment from him. After the Rinkoh, the 5S activity was done as our routine work to maintain our laboratory neat.