SF6 gas-insulated ring-network cabinet is manufactured with advanced design concept and advanced processing technology. High-voltage live parts are sealed in a stainless steel box filled with low pressure SF6 gas, and are not affected by the surrounding environment. The product has the characteristics of small size, low cost, simple operation, high reliability, and is widely used in distribution systems with high reliability requirements for power supply, such as urban commercial centers, industrial concentration areas, airports, electrified railways, subways, highways, etc. HRM8-12 SF6 gas-insulated ring-network cabinet is the latest generation of gas-filled cabinet carefully developed by our company in combination with the existing advanced production equipment and manufacturing technology. Compared with the existing similar products, it has many advantages, such as more beautiful appearance, more mature and reliable mechanical interlocking, and more uniform distribution of electric field inside the gas box. Therefore, the lightning impulse withstand voltage parameters of our company's products are far higher than those of conventional products, and the value can reach 95/110kV between phases/fractures.