Powerstep is based in Hong Kong and lists products on Global Trade Plaza including Stainless Steel Scrap, Metal Scrap for Sale, Non-Ferrous Scrap, Alucobond Scrap, and Metal Scrap. These listings cover various grades and forms of metal scrap such as stainless steel, non-ferrous metals (copper, aluminium, brass, zinc), electronic waste, and composite materials like alucobond. The company focuses on recycling-related scrap materials as stated in the product details.