In 2004 CSG Bulgaria Ltd. introduced a Quality Management System compliant with ISO 9001:2000 International Standard for its professional activities associated with internal building cleaning. The company was certified by the French Certification Body, AFNOR Certification and then re-certified according to the new version of ISO 9001:2008 in 2009.

In 2011 the company introduced an Integrated Environment, Health & Safety Management System in compliance with ISO 14001:2004 and OHSAS 18001:2007 international standards.

In 2017 CSG Bulgaria Ltd. developed a new Integrated Quality, Environment and Health & Safety Management System in compliance with ISO 9001:2015, ISO 14001:2015 and OHSAS 18001:2007.

In 2019, this Integrated Management System was revised to comply with the new standard ISO 45000:2018, which replaced OHSAS 18001:2007. After a successful certification audit by the certification body CI Bulgaria Ltd. in September 2019, CSG Bulgaria Ltd. obtained Certificate № BG/0141IQ/0124 according to ISO 9001:2015, Certificate № BG/0141IE/0124 according to ISO 14001:2015 and Certificate BG/0141IHS/0124 according to ISO 45000:2018.

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