Answer:
Labels and Safety Data Sheets.
Step-by-step explanation:
Label is a short description of what is inside the container. And Safety Data Sheets has everything that is required. You have precautionary measures listed as well as the training details in the safety data sheets. The training PPE is hence not required definitely. However, the only other thing required is the label, as without that you will not come to know what is inside the container from outside. Hence, the above answer.