- Classification and collection of waste and solid waste. - Loading, transport and storage.- Cleaning and maintenance of storage areas. - Purchase of surplus material. - Dismantling and dismantling of plants, equipment and installations. - Advice in the area of preservation and environmental conservation. - Secondary material smelting can meet specific requirements or mother alloys. Types of buying and selling materials:The different types of scrap ferrous and non ferrous metals that are bought and sold in Scrap World Trading, C.A are:- Battery scrap.