Dust filter bags are used in asphalt concrete mixing, building materials, cement ceramics, lime, gypsum and other production sites. Liquid-solid separation and fine material recovery in chemical, coke, carbon black, dye, pharmaceutical, plastic and other fields. Dust control and purification collection for mining, grain processing, flour, electronics industry, wood processing, etc. Flue gas treatment and dust removal systems in iron plants, steel plants, ferroalloy plants, refractory plants, foundries, power plants, etc. Aluminum electrolysis, smelting flue gas filtration of lead, tin, zinc, copper and other rare metals, fine material recovery, liquid and solid separation. Flue gas filtration of waste incinerators, coal-fired boilers, fluidized bed boilers, etc.