Building materials of glass, namely, glass for building in the nature of tempered and semi-tempered glazing and double glazing, laminated glazing and double glazing; glass for building in the nature of annealed glazing and double glazing; glass for building, namely, glazing and double glazing for thermal insulation and reinforced thermal insulation, glazing and double glazing for soundproofing, protection glazing and double glazing, glazing and double glazing for sun control, anti-glare and a...