To carry on the business of manufacturers, importers, exporters and dealers in sheet metal (ferrous and non-ferrous) and sheet metal articles of all kind in particular (i) aluminum and steel doors, windows, levers and automatic door closures, (ii) galvanised buckets, fire buckets, bath tubs, mugs, drums, tanks, tin containers and other articles for carrying or storing water, oil and other solid or liquid materials (iii) all kinds of steel and metal furniture, chimneys copes, ventilators, roofing, hand carts, municipal carts and all other metal articles.