1. Compliant with IS09710, HTM2033, C11 standards, CE certification. 2. 100% airtightness test. 3. 10000 insertions and removals without any malfunctions. 4. Using ISO32 and USA color standards to identify gases. 5. Use different interface shapes to distinguish different gases. 6. The intake pipe can rotate 360 degrees, making installation easy. 7. The intake methods include 90 °, 180 ° copper pipes, 90 ° DISS, and 90 ° hose fittings. 8. Gas maintenance. 9. Installation methods: wall mounted, tower mounted, equipment belt mounted.