Thank you for visiting. This is the 2026 edition of the Building Equipment Related Laws Collection. This product was self-replicated by a successful building equipment engineer for last year's exam. (It was confirmed to be allowed in the exam, and there were no issues.) ■ Lines have been drawn for the building equipment engineer exam. Affirmative statements are color-coded in red, and negative statements are in blue. ★ Check marks are placed on frequently tested areas, and highlighters of the same color are used on areas that often appear as mistakes in past questions. ★ Reflects 13 years of past questions from 2013 to 2025 (including the latest exam). ★ Attached indexes are used for frequently used sections, and as a bonus, original indexes are attached to areas that often appear on the exam, allowing for smooth problem-solving during the actual exam. It took approximately 60 hours to reflect past questions in the laws collection and approximately 10 hours to replicate it. Considering that you may want to draw additional lines yourself, I have used Frixion red and blue pens, and basically used a ruler for the lines. (Markers are also Frixion.) To prevent deterioration when actually solving problems, an A5 book cover is attached. (The back is thick, so it is fixed with masking tape.) Due to the lines being drawn by hand, please understand and acknowledge that there may be some distortions, blurring, and eraser marks. Although lines have been drawn, due to the nature of the product, the product condition is listed as "Like New." Please ask if you have any questions. ※ By the way, I scored 18/20 using this laws collection.