Use: Air Conditioning Certification: No Wireless Communication About Products All the products in this store are 100% taken in kind, with first-hand sources and guaranteed quality. All show detailed dimensions, material standards and product s. If they are on the shelf, they are usable. Store owners can shop by themselves even when they are not online. If you have any questions, please contact us in time for consulting services About Chromatic Aberration All pictures are taken in kind, without any beautification at all, and the color difference is unavoidable for anyone. Due to reasons such as monitors, photo production process, etc ., there may be slight color differences in the product color, please refer to the actual product