Aurubis Bulgaria AD issues this reference to confirm that Petko Petkov 24 Ltd. is carrying out a framework agreement for scheduled and emergency mechanical repair activities in the Metallurgical Production, Concentrator Plant, Sulfuric Acid Production, and Refinery of Aurubis Bulgaria AD. The company fulfills its obligations correctly, within deadlines, and in compliance with the specific requirements provided.

We would like to acknowledge our relationship with Petko Petkov-24 Ltd. as a reliable and trustworthy partner in our collaborative projects. The company consistently provides high-quality maintenance and repair services in accordance with regulatory standards, delivered within agreed timelines. They offer excellent quality, demonstrate strong organizational capabilities, extensive experience, and a professional approach to all requirements. Petko Petkov-24 Ltd. possesses modern equipment, advanced technology, and a highly skilled technical and operational team, ensuring excellent execution quality.

The project was completed with the required quality and in full compliance with the current regulatory requirements. The company demonstrated that it has a team of experienced and reliable specialists possessing high qualifications, a strong sense of responsibility, and the ability to react effectively under dynamic working conditions, strictly adhering to all obligations undertaken, including those related to occupational health, safety, and environmental standards.

Kaolin EAD issues this recommendation to Petko Petkov 24 Ltd., Radnevo, confirming that the company successfully fulfilled its duties as the main contractor for the complete construction and commissioning of an Electrostatic Filter at the client’s own facility – the Vetovo Factory, as part of an international team. The project was completed with the required quality and in compliance with all applicable regulatory standards. The company demonstrated that it has a team of experienced and reliable specialists with high qualifications, a strong sense of responsibility, and the capability to perform effectively under dynamic working conditions, strictly observing all commitments undertaken, including those related to occupational health and safety as well as environmental requirements.