Thank you for viewing. 2025 edition U-Can Second-Class Boiler Technician Qualification Guidance 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 product is in good 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 I hope this will be helpful to someone. Practical Skills Test, Skills Training, Skills Certification, Boiler Exam, Electrician