Portable combustible gas detectors for industrial and commercial use (HS: 9027100090); - Gas or smoke analysis apparatus (HS 902710). Fire protection (ICS 13.220.20).
National Standard of the P.R.C., Combustible Gas Detectors－Part 3：Portable Combustible Gas Detectors for Industrial and Commercial Use (18 page(s), in Chinese)
This standard specifies classifications, requirements, tests, inspection rules and markings of portable combustible gas detectors. This standard applies to portable combustible gas detectors used in industrial and commercial premises for detecting all types of flammable gases and vapours.