Dhirajlal & co. Is the manufacturer and exporter of a wide spectrum of products such as cement colors, pigments, chemicals, building hardware, and many more which are used in construction applications. Dhirajlal & co. Endows with a wide variety of processed minerals that comes in vivid colors and variety of shades. These are often mixed with the cement to render a particular color to the walls and interiors. As a part of that silica or sio2 is present in large quantities throughout the earth`s surface in various forms.