Union Steel Holdings Ltd. is an investment company, which engages in trading of ferrous and non-ferrous scrap metal. It operates through the following segments: Recycling Sales, Trading Sales, Scaffolding Services, Mechanical Engineering, Industrial Cranes, Marine Deck Equipment, and Other Business. The Recycling Sales segment imports and exports scrap iron and steel, ferrous, and non-ferrous metals. The Trading Sales segment sells steel and stainless steel products. The Scaffolding Services segment offers scaffolding services and related consultancy services. The Mechanical Engineering segment involves in the civil construction and engineering work; and manufacture of motor vehicle bodies, trailers, and semi-trailers. The Industrial Cranes segment includes sales, repair, and servicing of cranes. The Marine Deck Equipment segment consists of sales, repair, and rental of marine deck equipment. The Other Business segment comprises income from rental of materials and provision of waste management services. The company was founded by Yu Seng Ang and Yew Chye Ang in 1984 and is headquartered in Singapore.