This is a listing for the following books: * Class 4 Hazardous Materials Handler Examination, 2024 Edition * Easy to Understand! Class 4 Hazardous Materials Handler Examination 【Revised 2nd Edition】 Regarding the condition: * Class 4 Hazardous Materials Handler Examination, 2024 Edition: This one has been used quite a bit, so the condition is not very good. * Easy to Understand! Class 4 Hazardous Materials Handler Examination: This one has only been read a couple of times, so it's in relatively better condition. Neither book has any writing in it, and there are no problems with reading them. However, the condition is not great, and they are used items, so please refrain from purchasing if you are overly concerned about the condition. As a bonus, I will include two A4 sheets of important memorization points. Please don't expect too much from these, as they are just a bonus. I will ship via Yu-packet Plus.