The system of requirements of RUSAL to the suppliers of raw materials and supplies for the production of the main products and the procedures are defined in the following main documents of the Company: — Quality agreement; — Procurement regulations; — Regulation for the Quality Certification of Suppliers of Raw Materials; — Regulation for Auditing Manufacturers of Raw Materi als and Materials; — Regulations on supplier accreditation; — Supplier rating assessment method; — Guidelines for the development of QMS of suppliers; — Methods of organising the accounting of raw materials and materials with deviations from the requirements of regulatory documents; — Regulations on contractor management in the area of health and safety, fire and environment safety; — Regulation on Supplier Accreditation System.