Desulfurization and dedusting series product is environmental protection equipment with functions of efficient dedusting and harmful gas purification, low investment and operating cost and small floor area. It was listed as national key environmental protection practical technology and developed HNT-Ⅰ, HNT-Ⅱ and HNT-Ⅲ series which are suitable for flue gas dedusting, desulfurization and smoke abatement of 1-220T industrial boilers and kilns respectively.