Quality is an essential component in our products; we follow a policy of continuous research in our Laboratories and specialized Research Institutions, counting on periodical auditing by BSI at our plants.


Our Engineering Department of Product Design and Development enables CST to maintain updated on new insulator technologies and to meet the strict requirements of the Market of Electrical Insulators, from Low Voltage up to Extra High Voltage.


Our Quality System is certified as to the NBR ISO 9001:2000 Standard by BSI (British Standard Institute - Quality Assurance) from the UK and by ELETROBRÁS, in accordance with the NBR 19.000 Standard.