Headquartered in Toledo,Ohio IET, Inc. is an industrial engineering consulting firm offering high quality engineering service ... s throughout the nation to clients in: Industrial Commercial Governmental Healthcare Food Services IET embraces industrial engineering principles supplemented with lean and six sigma training and practice. IET's mission is to provide professional engineering services to our clients in an effort to improve their productivity, flexibility and competitive situation. IET is ISO 9001:2015 certified IET is celebrating 30 years of outstanding Industrial Engineering services! read more