久久久久久久久久久久久久久久久_国产激情自拍_最近最好的2019中文_www.黄色片_性欧美精品_性欧美free_综合色导航_欧美色图一区二区_亚洲精品一二_黄a大片_中文字幕有码在线_日本精品网站_欧美一级免费观看_永久免费在线看片_好吊操免费视频_在线观看www视频_欧美黄色大片在线观看_中文字幕日韩在线视频

Low Iron Pattern Glass is formed with a diamond pattern on one face and a smooth pattern on another, and then is further treated by tempering process. It is mainly used for the cover of photovoitaic modules or flat solar water collectors.

FGG’s low iron pattern glass has its unique recipe and special pattern, which ensures highest solar transmission by greatly reducing light reflection and absorbtion, and therefore increases photoelectric conversion efficiency or solar-thermal conversion efficiency.