1. The product is processed and manufactured according to the British standard BS5682-1998, and is CE certified. 2. 100% airtightness test. 3. 10000 insertions and removals without any malfunctions. 4. Different gases have different socket shapes to ensure that gases are never confused. 5. Multiple connection methods are available for selection. 6. Installation methods: wall mounted, tower mounted, equipment belt mounted.