ISO Standards

We are proud owners of 3 ISO standards (ISO 9001, 14001, 18001). These standards are not only important for the functioning of the company, they are positive indicators of corporate social responsibility of the company and compliance with the legislation. The company Rudnik was, in its activity, the first to receive the document and confirmation of this kind, which indicates the high standards and goals that the management of Rudnik set itself as one of the most important goals.


Company Rudnik fulfilled the set requirements and obtained another IQNet SR 10 (Social Responsibility Management Systems Requirements) certificate, which sets up requirements for the definition, implementation, maintenance and improvement of the corporate social responsibility management system.

This international standard has been developed by the IQNet organization. Of the ten certified enterprises in its field of activity in Serbia, company Rudnik is the only one which holds a social responsibility management certificate and is also the only such company in the Moravica district.

Apart from the new IQNet SR 10 standard, the requirements from the ISO 26000 (Guidance on Social Responsibility) standard as well have been applied in the corporate social responsibility field. As for other international standards, we also the only company in field of activity  which owns the following integrated management system certificates: ISO 9001 (Quality Management System), ISO 14001 (Environmental Management System) and OHSAS 18001 (Health and Safety Management System).

*IQNet (The International Certification Network) is the largest international association of certification bodies with the head office in Bern. It consists of 37 certification bodies.
*JUQS  (Limited Liability Company for Quality System Certification and Control) of Belgrade – a certification body accredited by the Accreditation Body of Serbia), an IQNet member-company.

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Contango d.o.o.

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Contango d.o.o. was founded on 15/09/2003.

The company was founded with the intention to engage in the trade of metals and their concentrates, as well as the final products of metal sector, as the core activity.