In May 2015, Dayu Electric won the bid for the Shenzhen subway project for the first time. After many early technical exchanges, the company conducted prototype trial production according to the needs of users. From July 13th to 16th, an acceptance team composed of large contractors, design institutes, users, and supervisors visited Dayu Electric for prototype acceptance.

　　The acceptance team tested and accepted the prototype through the review of the quality and technical documents of the prototype equipment, the brand check of the main components, the on-site production inspection, the calibration inspection of test instruments and meters, the performance test of the prototype on-site and the power-on function test. The acceptance conclusion is that Dayu Electric’s trial-production prototype meets the project requirements and the prototype is qualified. Dayu Electric will further improve product design based on the opinions of the acceptance team to ensure the consistency of product mass production and complete product delivery tasks on schedule.