May divide into the stationary gas alarm apparatus and the portable gas instrumentation according to own shape.
按自身形态可分为固定式气体报警器和便携式气体检测仪。
May divide into according to the use environment: Industrial used gas alarm apparatus and home use fuel gas alarm apparatus.
按使用环境可分为:工业用气体报警器和家用燃气报警器。
May divide into according to the use environment: Industrial used gas alarm apparatus and home use fuel gas alarm apparatus.
按使用环境可分为:工业用气体报警器和家用燃气报警器。
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