If you are running the Perfectworld client, to show the team name, follow these steps.

• Step 1
  
  Open your CSGO
  
  
• Step 2
  
  Enable the console
  
  
• Step 3
  
  Type "cl_clanid 32029682"
  
  P.S. WITHOUT ""
  
  
• Step 4
  
  Press Enter
  
  
• Step 5
  
  Check your name & Have FUN(。・∀・)ノ