Solar Power Advisor Exam Preparation Question Collection Solar Power Advisor Exam Official Textbook This is a set of two items. There are no writings, but there is a certain amount of use and initial scratches on the cover, so please refrain from purchasing if you are concerned. [Note] There is a fold on page 136 of the official textbook (see image 3). There is dirt on the cover of the official textbook (see image 5). Please understand the above before purchasing. No returns accepted. Shipping will be via Yu-Packet Post.