Zahret Sinai Gypsum Company Type Management System Certificates Standard ISO45001:2018 Address 8 EL Shahed Mohamed Abd el Hady ST, Ard Elgolf, Cairo, Egypt Scope Production and Sales of Stucco Gypsum & Molding Gypsum for Sanitary ware and tableware Certificate Number OH26.1400370 Status valid Certificate issue date 20/09/2026 Certificate validity 20/09/2029