CD4 Gas detection alarm instrument's video
NBCHAOVIDEO87 plays · · 2018-10-19
BOSEAN portable four-in-one Gas detection alarm instrument CD4 can simultaneously test four gases of methane/O2/H2S/CO, diffusion sampling, CD4 four-in-one Gas detection alarm instrument supports four ways of sound and light vibration display, and can freely set the alarm value.
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