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What do units such as LEL%, VOL%, TLV, ppm and mg/m3 mean and how to convert them?

The ppm unit is converted to LEL by the following formula: ppm=%LEL LEL(vol%)*100 For example, 35% LEL met...
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Shenzhen Municipal Bureau of Ecological Environment answers journalists' questions on the 14th Five-Year Plan for Ecological and Environmental Protection of Shenzhen

Third, we will strengthen coordinated control and improve the quality of the air environment. It proposes to promote t...
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Shanghai Haocang Bidonghan Blue Dashi Sewage Treatment Plant phase II expansion project

Shanghai Haocang System Control Technology Co., LTD won the bid of Foshan Nanhai Dashi Sewage Treatment P...
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