Retriever Sports, on the Mill Street Ind Est near Slough railway station, is the world's largest manufacturer of darts equipment. Mars Limited has a large chocolate factory, run under the name of Effem Holdings Ltd, also in Slough on the enormous Slough Trading Estate which makes 3m Mars bars a day; nearby is Johnson Controls UK (car seats), and ICI Paints, Polyfilla, and Dulux. Horlicks is made by GSK there. Oki UK (desktop printers) are based next to Mars. Honda UK, Citroën UK, Fiat UK, Douwe Egberts UK (and its owner Sara Lee UK), BlackBerry UK, Black & Decker Europe, Amazon UK, Ingres UK, Telefónica O2 Europe UK and Reckitt Benckiser are also in Slough.