Transparent materials allow architects to design elegant houses with better lighting. Glass was vastly used as a major building material in the early days. However, glass has been limited in application for such factors as weight and intractability. By great improvement of polymer technologies to develop lightweight and easy-to-make transparent building materials in diverse shapes, such as polycarbonate sheets, PVC building materials, etc. However these plastic materials are more sensitive to UV light than traditional glass and cements. Thus, problems may be caused to outdoor building materials, such as discoloration and chalking or fracturing and water leakage. Everlight Chemical provides a weather-resistance protection solution to meet all of requests.