This is the "Complete 7 Subjects, 354 Categories Building Management Technician Exam Question Collection: Building Manager Pass Text and 2023 Building Management Engineer Exam Model Answer Collection." I used this for studying in the past. There are scratches and marks on the cover. There is yellowing and wrinkling due to aging. Please refrain from purchasing if you are sensitive to these issues, as it has been stored at home. Thank you. A set of question collection and model answer collection for the Building Management Engineer exam.