亚洲 国产 另类 无码 日韩麻豆|亚洲午夜精品久久久久久浪潮|在线观看特色大片免费网站|亚洲熟妇久久国产精7品|亚洲无码视频在线播放|

When the explosion-proof dust collector is sent to Vietnam to collect explosive dust, the dust is diluted with air, and the concentration of the dust in the pipe is far below the lower limit of the explosion. The non flammable powder, such as clay and bentonite, is continuously supplied from the middle of the system, such as clay and bentonite, so as to dilute the explosive dust in the dust collector to prevent the danger of explosion and fire.