Glass compositons

A neutral tones of absorption infrared and UV of sodium calcium silicon glass, it contains 0.25-1.75% (weight) of total iron (to Fe2O3 said), by Xia type calculation out of Asia iron content (weight):%FeO (weight) ≥ 0.007+ (light density-0.036)/2.3, the glass also contains a or multiple selected since Se, and Co3O4, and Nd2O3, and NiO, and MnO, and V2O5, and CeO2, and TiO2, and CuO, and MnO and SnO of coloring agent So when 4mm, the glass, the visible light transmittance of at least 32%, direct solar heat transmittance at least lower than visible light transmittance 7%, ultraviolet transmittance is less than 25%.