国产mv欧美mv日产mv观看_欧美日韩精品一区二区_在线亚洲欧美性天天影院_欧美成年黄网站色视频免费_美女被免费视频网站_九九免费大片毛片_欧美日韩aa一级视频_91av免费在线观看

Don't take risks, please control static electricity! With the rapid development of modern economy and the change of the characteristics of various raw materials, the scope and quantity of electrostatic accumulation in industrial equipment and manufacturing process are also increasing. Every day in the world there are explosions and fires of flammable and explosive items (such as liquids, dust, particles, gases, steam) in dangerous situations caused by static electricity and release.