The optical part of kingpower storage is made of the world's top brands of optical materials such as Bayer in Germany and GE in the United States. It is more transparent than glass. It is matched with the mounting holes of the mainstream housing in the market. The leakage test data is more than 10 times the battery national standard (300KP without Leakage), perfectly matched with the products of the shell manufacturers (Yongguan, Yiji, Science, Tenda, Wanli, Aerospace, etc. (in no particular order)