BH-4 Gas detection alarm instrument's video
NBCHAOVIDEO605 plays · · 2018-10-19
BH-4 can simultaneously detect hydrogen sulfide, carbon monoxide, oxygen, combustible gas 4 kinds of gas, natural diffusion detection of gas concentration, BH-4 is suitable for explosion-proof, toxic gas leakage rescue, underground pipelines, mines, metallurgy and other environments.
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