NGA Association By Simone PozzatiIn GRAF IndustriesPosted July 19, 2022 📣Joined with the NGA Association! 💪 Proud to be part of the community of the best 1,700 companies representing all aspects of the glass and building products industry. https://www.grafindustries.com/en-us/ @grafsynergy #certified @NGA #attestation #pvcwindows #manifacturers