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Do you know every company in the world always tried to eliminated activities which not give any value to customer or to company? Why? because activities with no value it mean cost for company and every cost will impact to cost production. To get a lot of benefit then Company must minimize the cost of production.
In Japan, there is most famous theory of supply chain, Toyota Ways. If you read the book, you will understand every determination and effort to make Toyota success. First they introduce about 7 waste (Seven waste) that must be eliminated, continues improvement to make better work for production, just in time, make new market, make system with automation, mixed level or balanced production.
