Thank you very much for your comments on us, and I must clarify your feedback here 1, we have video inspection with you before delivery, and your feedback is very good. The photos of holes you sent were not produced before delivery. The real reason is that you want to install the roof fan and drill the hole yourself. 2. Our company is recognized in the industry of high-quality service, from you contact us, is the beginning of our service! We have been communicating well, but you are often angry and abusive, and you have apologized for your erratic mood and behavior. No matter what time, I have been patient to cooperate with you, so please make a true and fair evaluation. In any case, very happy to cooperate with you, and our company will continue to support and help you!