The use of imported stainless steel plate, the use of advanced welding laser welding technology, inflatable shell to achieve the protection level of IP67. Box filling with SF6 gas, and after a simultaneous vacuum, helium leak detection to ensure that gas sealing boxes. Load switch, grounding switch, such as moving parts and the bus switch, fuse insulation tube, vacuum interrupter are sealed in stainless steel gas tank. Gas explosion-proof box at the bottom of the mouth is equipped with explosion-proof membrane, when the switch inside the abnormal pressure of gas above a certain value, the population explosion-proof pressure relief from the lower part, effective in preventing high-pressure gas on people, cables and substations within the a view to switching equipment damage.
      Inflatable CKFL-12 series has a compact cabinet, all closed, all insulation, long life, maintenance-free, small footprint, secure, reliable, free from the work of environmental impact, etc., widely used and industry and civil cable ring network and terminals for Xinhua. Especially suitable for small-scale secondary distribution points, opening and closing, the industrial and mining enterprises, airports, railways, commercial, high-rise buildings, highways, subways, tunnels and other fields.