This is a collection of past exam questions for the Architectural Institute of Japan's Air Conditioning and Sanitary Equipment Engineer exam (released in 2024). The book can be purchased for 5050 yen, which includes the list price of 4400 yen plus 650 yen for shipping. There are no markings in the book. I used it only for studying sanitary engineering, so it should be in good condition. Also, there are no noticeable scratches or stains. Please understand this before purchasing. Please understand that the book will be stored at home and shipped with simple packaging. If you have any questions, please feel free to comment.