1140910-Safety Movie(EMI) (English)
1140910 updated Welcome to watch the vedio movie by yourself and them compare with the laboratory find all the items. https://www.youtube.com/watch?v=MEIXRLcC6RA https://www.youtube.com/watch?v=chODOKSPJS4 https://youtube.com/playlist?list=PLLG7h7fPoH8I-2LK4vx0jahTH4CEEk1bH&si=ONkrkGUKf4IC9wpX https://www.youtube.com/watch?v=9o77QEeM-68 Safety first