MicroMeasurements is the leading supplier
Recently (10/03-10/14/18), Dr. Vaughan visited the Northeast Forestry University in Harbin, China. He presented a series of lectures on his lab's research and one introducing the Chinese students to Louisiana and UL Lafayette. Dr. Vaughan and his host, Dr. Yizhuo (Joe) Zhang, also discussed research collaborations and the possibility of future student exchanges.
Pictures from the trip, including some sightseeing in the Beijing area led by Dr. Zhang and one of his graduate students can be found in a flickr album for the trip.