In the photovoltaic industry, high-altitude operations are frequent and personnel safety is of vital importance. In order to effectively prevent the risk of falling, the introduction of a horizontal lifeline system is an ideal choice. The system uses high-strength, corrosion-resistant materials and is reasonably laid along the photovoltaic bracket or roof structure to form a stable safety belt. The operator is connected to the lifeline through a professional safety belt and can move freely in the working area while enjoying all-round safety protection. The system is scientifically designed, easy to install, and easy to maintain, and can operate stably for a long time. The application of the horizontal lifeline system will significantly improve the safety of high-altitude operations in the photovoltaic industry and escort the safe production of enterprises.With the increasing demand for photovoltaic in the international market, the ever-changing scenarios, especially those residential projects in various countries and regions have put forward higher requirements for construction safety and efficiency. 3S contributes its solutions like solar lift series and a combination of lifeline and protective equipment to facilitate safe and efficient transport of personnel and equipment, reducing the time and effort required to install photovoltaic systems or to help maintain their optimal performance.