JL Mag JL MAG is one of the world's largest manufacturers of neodymium-iron-boron (NdFeB) permanent magnets, headquartered in Ganzhou, China. JL MAG produce rare earth permanent magnet products for customers in automotive, energy, industrial, and consumer electronics markets. IDTechEx spoke with Jeff Reyes, business development manager at JL MAG Europe at the Metal and Critical Raw Material Exhibition in Frankfurt, Germany. JL Mag