Thank you for viewing. 2025 Edition U-Can Second-Class Boiler Technician Qualification Course Main Textbooks: 4 books, 100 Essential Questions for Passing!, 350 Important Terms, Correction-related Documents This is a correspondence course product priced at ¥39,800. The items are in beautiful condition, having only been flipped through. All the materials shown in the first photo are included. Main Textbooks: 4 books, Supplementary Materials, 100 Essential Questions for Passing!, 350 Important Terms, Correction-related Documents It would be wonderful if these could be of use to someone. Practical Skills Exam, Skills Training