Windsor Machines Limited was erstwhile incorporated as 'Windsor Engineering Limited' in May, 1963. The Company name was changed to R H Windsor Limited in 1964 and was again changed to Klockner Windsor Limited in 1986 and then to DGP Windsor India Limited in 1994. Later, the Company was once again changed to Windsor Machines Limited' from 'DGP Windsor India Limited' in February, 2015. The Company is into the business of manufacturing of plastic processing machinery, which includes pipe extrusion, blown film extrusion and injection moulding machines. The Company works 3 manufacturing facilities located at Thane (Maharashtra), Vatva (Gujarat) and Chhatral (Gujarat).