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Group 4 is a group of elements in the periodic table. It contains the elements titanium (Ti), zirconium (Zr), hafnium (Hf) and rutherfordium (Rf). This group lies in the d-block of the periodic table. The group itself has not acquired a trivial name; it belongs to the broader grouping of the transition metals.
Titanium is an advanced material which is also used in aeronautic industry. Titanium eyeglasses frame is characterized many merits such as ultralight, durable, strong and corrosion-resistant. You will get greatest comfort and health by wearing titanium glasses.