Cleaning preparations, namely, cleaning solutions and detergents used for cleaning scales, including carbonate, metasilicte, sulphate, iron oxide on metal surfaces, for pickling of metals and removing scales including calcium carbonate, iron oxide and calcium sulphrate, thereon, for cleaning of carbonate of lime, calcium sulphrate, silicon and mixture non metals, for cleaning oil stains on metals before painting and plating, for cleaning of medium/low temperature tar scale induced by coal tar in the equipments of various materials of gas, petrochemicals, metallurgical, machine producing and paper making industries, for cleaning paraffin in crude oil transportation pipelines, storage tanks, heating and pressing station pipe systems and other equipments, for removing rust on iron and steel, for removing scale of industrial and civil boilers, for removing medium, low temperature carbon deposit of industrial and civil machines and equipment, for removing lacquers, varnish and paints, for cleaning the inside of bake oven and chimney and oil stain on operation panel and workshop floor, for removing rust and scale of water tanks of vehicles, and for cleaning metal surfaces of vehicles