Our products have high insulation performance, high voltage resistance, high airtight performance, among which, we use high purity high temperature glass imported from the United States, the factory inspection standard is controlled above 10,000 megaohms, under the test conditions of DC voltage 1000V full inspection; The voltage test requires us to control it at 3.5KV and the leakage current is less than 0.5MA for full inspection; Airtight performance We use fully automatic airtight testing equipment, with a pressure of 4.2 mpa for full inspection.