Key Takeaways New tariffs may dent pricing and margin flexibility in China. APH's China revenue rose 18.4% in Q1, led by IT datacom demand. APH stock is up 41.4% YTD, outpacing sector and industry peers.Amphenol (APH) designs and manufactures connectors, interconnect systems, antennas, sensors and high-speed specialty cable. With vertically integrated facilities in over 30 countries, it supports diverse end markets, including IT datacom, automotive, mobile devices, and industrial applications. APH supplie ...