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Static electricity or accumulation of static electricity can be seen everywhere around us. In daily life, electrostatic spark is considered a public hazard: in flammable gases, it can lead to disastrous consequences. Many equipment fires and casualties are directly related to the ignition of steam, gas or dust by electrostatic sparks. However, we can take various protective measures throughout the industry to control the threat of ubiquitous electrostatic sparks to people, equipment and production processes.