Hangzhou Kelin Electric Co., Ltd. engages in the research, development, production, and sale of electric power products in China. The company offers smart grid systems including series laser-acoustic acetylene rapid detection system, transformer vibration monitoring system, cable monitoring and early warning system, digital twin substation system, distributed fault location system, insulating oil online filtration device, and smart vacuum sampling valve; as well as perovskite solar modules. It also provides energy storage systems such as air-cooled energy storage system, liquid cooled integrated energy storage system, liquid cooled split energy storage system, and prefabricated compartment energy storage system. The company was founded in 2002 and is based in Hangzhou, China.