Filtering units used in stationary sources, namely, power plants, waste incinerators, hazardous waste incinerators, diesel engines and chemical plants, for use in removal of waste gases and flue gases and improving environmental technology; catalyst regeneration and rejuvenation facilities for filtering units used in removal of waste gases and flue gases; storage facilities for reagents, namely ammonia and urea used in filtering units for use in removal of waste gases and flue gases; and inje...