★ I passed the exam using only this book, so I'm selling it. ● Condition Used, with corresponding signs of wear. It was actually used, so there is some wear and tear on the cover and corners. Also, there are some marks (such as star symbols) on some pages made with a pen, as shown in the photos, but they do not interfere with solving the problems. The other pages are in relatively clean condition. Please purchase only if you understand that this is a used item. This is a problem book that allows you to practice with exam-style questions, carefully selected from frequently tested topics. Predicting the actual exam: You can develop the skills necessary to pass the exam through practical questions. ● Comprehensive attachments: Comes with a separate, easy-to-use answer and explanation booklet. ● Convenient for memorization: Also includes a red sheet to hide important points. This is the perfect book for those who want to prepare for the exam efficiently and practice output. I will carefully package it with water damage protection and ship it. #HazardousMaterialsHandler #Class4 #HazardousMaterialsClass4 #NationalExamination #QualificationExam #SeibidoPublishing #ProblemBook #ReferenceBook