In general,do not call the German name,mostly not call its full name,just say its  family name .
 You had better add "Mr","Mrs","or" miss "or their title .
  1.It isn't convenient between before 10 AM and  after 4 PM.It isn't polite for German to  talk without making an appointment in advance,and you  cannot be late .
 2.Don't directly offer some points without evidence in Negotiations.
 3. Don't prevaricated,be ambiguous and drag shuffle in Negotiations.
 4. You mustn't  use a kidding way to break the silence in Negotiations.
  In general,do not call the German name,mostly not call its full name,just say its  family name .
 You had better add "Mr","Mrs","or" miss "or their title .
  1.It isn't convenient between before 10 AM and  after 4 PM.It isn't polite for German to  talk without making an appointment in advance,and you  cannot be late .
 2.Don't directly offer some points without evidence in Negotiations.
 3. Don't prevaricated,be ambiguous and drag shuffle in Negotiations.
 4. You mustn't  use a kidding way to break the silence in Negotiations.