DFG conservatory toughened glass 1. Clear float toughened glass 2. Strictly tolerance: within 2mm 3. High ... solar transmittance DFG conservatory toughened glass Advantages1. Top grade clear float glass with high flatness2. Flat polished, curved polished, rough ... : 3mm, 4mm, 5mm, 6mm, 8mm, and 10mm Tougheneed glass technology1. Clear toughened glass is produced by heating annealed glass to its ...