Quantic Emc Has Provided Signal Integrity (si) And Electromagnetic Compatibility (emc) Simulation Software For Pcb Designers Since 1985. Recognized As The Inventor Of Si, Its Products Are Recognized By Many Customers For Their Professionalism And Precision. Rongxiang Signed A Product Agency Agreement With Quantic Emc Of Canada In October 2007 And Became Its Agent In China.