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A metal oxide arrestor (MOA) is an electrical device that is designed to protect electrical systems and equipment from surges caused by lightning, switching operations, and other sources of overvoltage. The MOA technology utilizes a mov arrester element that provides low impedance paths for high voltage surges, thereby diverting the excess energy to the ground.

Medium voltage surge arresters are electrical devices designed to protect electrical equipment from surges or transients that occur on medium-voltage power systems. These systems typically operate at voltages between 1kV and 36kV, and they are commonly found in various industries, such as manufacturing, oil and gas, and utilities.

RTV silicone high voltage insulator coating, abbreviated as RTV coating, has rapidly developed and been widely applied as a new technology and material in China since 2000 due to its long-lasting, maintenance-free advantages. They are primarily used for preventing pollution flashovers on the external insulation of insulators or electrical equipment in power systems.