This research aimed to improve the logistics system efficiency and to evaluate the satisfaction of the companys customers in the 4 dimensional qualities: 1) on-time delivery, 2) order accuracy, 3) goods delay, and 4) goods damage. The research started from primary information investigation and information gathering from the logistics department. The sample was 10 persons from logistics department. The research instrument was the recording form. The data was analyzed by fishbone diagram.  The 5W1H questioning techniques and ECRS improvement were used to solve the problems. Then, the improvement was proposed by flow chart in order to eliminate the worthless activities. It was found that the logistics efficiency was increased after the improvement as the followings: 1) the on-time delivery increased from 64.38% to 80.42%, 2) the order accuracy increased from 77.00% to 86.00%, 3) the goods delay decreased from 22.19% to 14.13%, and 4) the goods damage decreased from 12.18% to 5.18%. The increasing of logistics efficiency after the improvement was revealed by the evaluation of the companys customers satisfaction.             
	The questionnaires with the 0.90 reliability were used to ask 45 companies about their satisfaction on quality and service. The computer program was used to analyze the data which included percentage, mean ( ), and standard deviation (S.D.). The customers satisfaction was at the good level.	
