What are you crudentials to consider China "best" in manufacturing? The US companies have handed the majority of high-tech manufacturing technology/processes over the past decades in the name of corporate profits. That's in addition to known(criminal) transfer of secret and proprietary information by Chinese subjects to their "home country", technology that included top secret US military industry designs. I suggest that you keep buying Chinese manufactured products at WallMart and go down with the all of the rising unemployed citizens of the USA.
What are the engineering and design challenges in creating successful IoT devices? These devices are usually small, resource-constrained electronics designed to sense, collect, send, and/or interpret data. Some of the devices need to be smart enough to act upon data in real time, 24/7. Specifically the guests will discuss sensors, security, and lessons from IoT deployments.