2, the cost is not in your company's budget. (The complexity of the equipment, parts are not very good procurement, the design of the product needs to be combined with the existing production line, etc.)
3, the supplier's engineers to give the program is not the most appropriate.
4, the supplier is not a professional attitude.
5, after-sales service. Is the maintenance of equipment and after-sales service, generally good equipment before the formal purchase of repeated tests, and debugging so that the performance of the various indicators of equipment to achieve a good state.