This research is an application of the analytic hierarchy process to decide to use in selecting equipment air system to increase the efficiency of the work space because the working area has ายล มวา and obstruct the work.3 you after the use of analytic hierarchy process in choosing proper wind system equipment used in the welding department. It can increase the area of work is 130.77% and preparation of questionnaires from real users of 45 you. The assessor to the satisfaction scores were 3.27 every topic - 3.40 out of 4 which is in the level of satisfaction. "Very good", except the pressure of the ลมที่ use only. With a score of satisfaction were 2.58 which is in the level of satisfaction, "good!"
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