BYD's procurement supply chain is very tired, because first of all, it is necessary to respond to the needs of business departments in time, but at the same time, as a purchaser, it is also necessary to make a good comparison between quality and price, and constantly discuss with suppliers to get the best goods at the lowest price, or let suppliers provide better services. Especially when the company uses the services of suppliers, when there are some problems, as a purchaser, it is actually difficult to coordinate related affairs, and it is also very busy and tired.