Serum Institute of India Pvt. Ltd. is now the world's largest vaccine manufacturer by number of doses produced and sold globally (more than 1.5 billion doses) which includes Polio vaccine as well as Diphtheria, Tetanus, Pertussis, Hib, BCG, r-Hepatitis B, Measles, Mumps and Rubella vaccines. It is estimated that about 65% of the children in the world receive at least one vaccine manufactured by Serum Institute.
Sterlite Technoloties design and integrate these digital networks for their customers. They manufacture fiber optic cable. Core capabilities of company are Optical Interconnect, Virtualised Access Solutions, Network Software and System Integration. Headquarters is in Pune, India.