Detroit in USA was the place of meeting for engineers and profession people from industry-leading drive technology during Gear Expo Fair and co-locating conference ASM Heat Treating Society Conference Exposition which was hold on October 20th – 22nd, 2015. The ZZN for the first time participated in the Gear Expo Fair as an Exhibitor, presenting world class of rolling stock gears, used in railway industry and complementary portfolio. The event was a good opportunity to meet long-term and demanding customers, to acknowledge the latest technology on the market, and to exchange views regarding heat treatment processing with experts. Exhibition space of “Gear Expo Fair was almost 70.000 m2 and gathered 238 exhibitors from 14 countries including Australia, Canada, China, Switzerland, South Korea, Italy, the USA and Poland. We wish to thanks to everyone’s who visited our booth at the Gear Expo Fair.