How to distinguish CGDI ELV simulator between Original and Fake quality?

How to distinguish CGDI ELV simulator between Original and Fake quality?

In the market, there appear the fake quality cgdi elv simulator, please pay attention to check what quality which u get, avoide the bad quality bring trouble for work.

1.Different Packing: 
   Fake one with similar packing, but all original CGDI product take sealing sticker packing




2.Different Material screw

3.Different PCB Circuit Board:
  A good PCB is important toward the quality, original one with green pcb board, big size, screw fixed, work stable, the fake one with small size purple pcb board, no srew fixed, easy drop off.