Complex sentence: Patek Philippe & Co. (PP) is a Swiss luxury watch "manufacturer" located in Geneva and the Vallée de Joux, considered by some watch enthusiasts to be one of the best traditional watch companies in the world.
Split into simpler sentences: Patek Philippe & Co. (PP) is a Swiss luxury watch "manufacturer" located in Geneva and the Vallée de Joux. Considered by some watch enthusiasts as one of the best traditional watch companies in the world.