Article 12 of the General Administration of Safety Supervision on Printing and Distributing the Criteria for Judging the Hidden Dangers of Major Production Safety Accidents in Chemical and Dangerous Chemical Production and Operation Units (Trial). Explosion-proof places are not installed and used in accordance with national standards. Therefore, chemical explosion-proof mobile phones must be mobile phones with Ex logo. The use of communication tools such as mobile phones is prohibited in explosion-proof areas, but in reality, many small chemical plants or private chemical companies cannot do so, but in recent years there have been more and more accidents with non-explosion-proof mobile phones. Coal Industry Co., Ltd. used a non-explosion-proof mobile phone gas accident. Later, Shanxi Xinfa Group used a non-explosion-proof mobile phone to cause a fire and explosion. In 2007, a gas station in the city of Sao Paulo, Brazil, suffered an explosion due to an explosion on a mobile phone when a gas station employee received and unloaded fuel. According to local military investigations, the reason for the explosion was that sparks generated by the electric current in the mobile phone ignited gas when answering the mobile phone. As the so-called petrochemical industry does not distinguish itself, let's introduce several terminals or mobile phones that support the explosion-proof grade of petrochemical industry.
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