Topsit A.S. >
Primarily established as a construction company in 1973, in Istanbul, Topsit A.S. (Co.) has been representing Xypex Concrete Waterproofing by Crystallization materials in Turkey since 1987. In 1995, Topsit became one of the 12 licenced manufacturers of Xypex Chemical Corporation of Canada who is a leader and pioneer in concrete waterproofing and concrete protection sector. In June 2019, BSI’s Regional Business Development Manager Hanifi Baran delivered Topsit’s certificates to Topsit’s Chairman, Nejat Sonmez joined by Ebru Sonmez and Esra Karahasan.