Asst.Mgr./Sup. shall regularly follow-up, monitor and keep asking own subordinates oftenly, to check whether there is any work problems. Asst.Mgr./Sup. can analyze the root cause of the problem, in order to propose alternatives solutions, which can solve the problem effectively, without causing other problems or other impact later, especially, to maintain the customer satisfaction and to maintain the good relationship with the suppliers, the related parties