The Company was incorporated in Singapore on 20 January 1975 and was listed on the Singapore Exchange Limited in 2006. The Company adopted its present name, Koh Brothers Eco Engineering Limited ("KBE") in 2014. KBE started out by providing EPC services for water and wastewater treatment projects as well as hydro-engineering projects, before expanding into providing EPC services for bio-refinery and renewable energy projects via its Bio-Refinery and Renewable Energy Division, Oiltek Group. In 2016, KBE expanded into the construction and civil engineering business with the acquisition of Koh Brothers Building & Civil Engineering Contractor (Pte.) Ltd. The Engineering and Construction Division and the Bio-Refinery and Renewable Energy Division are the two main businesses of the Company.