Potting is anything but simple! Innovation lies in details, and subtle design changes decide success or failure of the photovoltaic system. 45 degrees outlet design takes long-term security of the panels into consideration; The "three-dimensional coated" design ensures stable output even if the box crushes; Simple and quick installation is cost-saving; Safe connection and solar panel protection are its primary responsibility. Approved by TUV and UL, and universally accepted. QC Solar, innovation everywhere!