Summarized a few, not necessarily useful, but can be referred to:

1. before the negotiation should be fully prepared;

2. negotiation should be refreshed, energetic;

3. try to negotiate with the person who has the right to make decisions;

4. try to negotiate in their own office, do not go to the supplier;

5. should try to take the initiative;

6. try to talk to the other party in an affirmative tone;

7. try to be a listener;

7. try to be the first to take the initiative. Take the initiative and change the subject when necessary;

6. Try to talk to the other party in a positive tone;

7. Try to be a listener;

8. Verbally put yourself in the other party's shoes and think of the other party;

9. Back off when necessary;

10. Do not make hasty decisions.