This is a set of three reference books for the fiscal year 2023 Dangerous Materials Handler Examination: the legal regulations section, the practical application section, and a collection of example exam questions. These books were distributed as part of a paid training course by the association and are not available for purchase in bookstores. There are handwritten notes in the books from the training. Please be aware of this. The set includes: ① Essential Handbook for Dangerous Materials Handling: Legal Regulations ② Essential Handbook for Dangerous Materials: Practical Application ③ Dangerous Materials Handler Examination: Example Questions Year: Fiscal Year 2023 Thank you for looking.