HOSUNG, of which main business lines are to manufacture industrial atmospheric pollution-prevention facilities, and develop technologies for resources collection and produce related equipments, furnishes high temperature ceramic filters, diesel particulate filters and environmental parts, and researches into and produces dust-collection filter traps in ultra-high-temperature and high-pressure conditions, combustion exhaust treatment systems for vehicles and large vessels and ceramic filters for treatment of multi-gages from industrial waste incinerators and coal-fired power plants.