I erased all the pencil markings, which were faint. I checked multiple times, but there might be some I missed. Shipping will be via Yu-Packet. I handled it with care, but there is some wear and tear. A model answer collection that includes questions and answer explanations from the past 9 years. - Title: 2025 Edition, Class 3 Refrigerating Machine Operator Examination Model Answer Collection, Volume 3 - Publication Year: 2025 - Contents: Includes questions and answer explanations from the past 9 years (2024 to 2016) - Target Years: 2024-2016 (Laws and Safety Management Technology) - Features: Answer explanations are in a separate booklet, making it easy to cross-reference questions and answers. Thank you for viewing.