World can produce 80% parts in the same factory because World has a lot of high precision and high technology equipment, including 12 units Pama boring and milling centers, Gleason gear grinding machine, Liebherr gear hobbing machine, Hitachi pentagonal machining center, 12m CNC rail grinding machine, Toshiba milling and boring machine center, annealing furnace and sand blasting machine. World also design and produce some unique equipment for some parts machining such as round welding machine, pipe welding machine and slide machining machines. High quality needs high precision equipment to ensure.