Conformity Certificate No. No.RU.MCC.305.1020.4.ПР.22540-22545 dd. April 19^th, 2011, issued by certification body «Mosekspertstroysertifikatsiya» for rebars manufacturing, thermomechanically welded deformed bars of A500C class for concrete structures reinforcement production (diam. 8 mm-25 mm, 28 mm-40 mm) of Ст3-5пс, Ст3-5сп steel grades in conformity with GOST Р 52544-2006 requirements. The document is valid through April 19^th, 2014.