Face of all kinds of customer groups, whom engineers will design a blueprint that is reasonable and the venue of the economy. So they have enough experience worthy of the TOEFL. Customers and friends to believe the truth of industry specializing in surgery. Have also encountered bent friend, in the case of persuasion failed engineers can only watch him detours. Waiting for him to prove himself wrong with reality, we are still willing to help him to minimize losses. Case I: Shanxi merchants belong to a very stubborn kind, engineers persuasion failed, only in accordance with what he meant to plan the site, which means that according to the meaning of his orders. After the installation is ready, not only to find themselves more with the material, but also affect the yield. Under the amendments we finally reached the intended purpose, in the correction process, we appointed workers refitted equipment. Costs incurred by the merchants bear, and he is willing to assume. Later in the expansion of production when the production line again resolutely listen engineers. Of course, do not mean to blame the customer, just more thoughtful consideration for the customer, so that customers do not want to waste money. After all, rich practical experience of engineers, and many customers and friends are requested to imagine comment. Hopefully, rational planning site customers can not be bent.