I am a professional editor. I am an undergraduate majoring in logistics management. I just finished my master's degree in logistics twice a year, in May and June, 1 1, with three books, namely, sales logistics, inter-enterprise logistics and production logistics.

This book is printed by the Federation of Logistics and Purchasing. It is said to be internal information and can't be bought outside, but there are many mistakes and typos in it. We didn't do well in the school exam, we just copied it.