"乙種1・2・3・5・6類 危険物取扱者試験 令和4年版" (Class 1, 2, 3, 5, and 6 Hazardous Materials Handler Examination, 2022 Edition) Price: ¥2000 #Books #Engineering/Industry/Other I am selling this because I was able to pass the exam a few years ago. There are no markings such as highlighting in the reference book.