About Tsemex Business Group Tsemex is a company first established in Ethiopia in the year 2001. Although it is primarily launched as an importer and distributor, it is currently involved in various trade and investment ventures. Since its start up, the company has branched into five legally independent sister companies with a single management system. These various ventures are namely; water and water related product distributor, Electro mechanical contractor, Building and Water contractor, Hospitality and real-estate.