This is a set of 5 textbooks related to the Class 4 Hazardous Materials Handler examination. All books are free of writing and highlighting. Individual sales are also possible. ① Actual Exam Style Class 4 Hazardous Materials Handler Qualification Exam Question Collection Condecs Information Research Institute, Seibido Publishing ② Class 4 Hazardous Materials Handler Examination Example Questions National Hazardous Materials Safety Association ③ Hazardous Materials Six Laws 〈Appendix〉Key Points of Laws and Practice, Hazardous Materials Terminology Index Hazardous Materials Law Research Institute, Tokyo Horei Publishing ④ Hazardous Materials Handling Handbook Practical Edition ⑤ Hazardous Materials Handling Handbook Law Edition