Asst.Mgr./Sup. shall has good database of suppliers, the database shall be in good system, easy to use, and up-to-date database, for proposing the alternative solutions of business negotiation. Asst.Mgr./Sup. shall evaluate the needs of the related parties, for example, the customer, the supplier, before encountering the negotiation and compromise, for successfully negotiation and compromise. Asst.Mgr./Sup. can transfer the art and technique of business negotiation and compromise to the subordinates.